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When im try to launch my world, game crashes

Crash report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Would you like a cupcake?
Time: 01.05.18 14:12Description: Loading NBT data
java.util.zip.ZipException: incorrect data check at java.util.zip.InflaterInputStream.read(Unknown Source) at java.io.BufferedInputStream.read1(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at java.io.DataInputStream.readFully(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at net.minecraft.nbt.NBTTagCompound.func_152448_b(NBTTagCompound.java:388) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:50) at net.minecraft.nbt.NBTTagCompound.func_152449_a(NBTTagCompound.java:398) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:52) at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:170) at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:125) at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:120) at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:121) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:20) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:12) at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:343) at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126) at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265) at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:130) at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:153) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- Head --Stacktrace: at java.util.zip.InflaterInputStream.read(Unknown Source) at java.io.BufferedInputStream.read1(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at java.io.DataInputStream.readFully(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at net.minecraft.nbt.NBTTagCompound.func_152448_b(NBTTagCompound.java:388) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:50)
-- NBT Tag --Details: Tag name: Level Tag type: 10Stacktrace: at net.minecraft.nbt.NBTTagCompound.func_152449_a(NBTTagCompound.java:398) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:52) at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:170) at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:125) at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:120) at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:121) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:20) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:12) at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:343) at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126) at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265) at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:130) at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:153) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
-- System Details --Details: Minecraft Version: 1.7.10 Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.8.0_161, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1800701072 bytes (1717 MB) / 2134114304 bytes (2035 MB) up to 3207856128 bytes (3059 MB) JVM Flags: 8 total; -Xmx1532M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Xms2G -Xmx3G -Xmx3072M AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used IntCache: cache: 15, tcache: 0, allocated: 13, tallocated: 95 FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_E7 40 mods loaded, 40 mods active States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UCHIJAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) UCHIJAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UCHIJAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UCHIJAA AM2-Preloader{0.0.3} [AMCore] (minecraft.jar) UCHIJAA TooManyItems{1.7.10} [TooManyItems] (minecraft.jar) UCHIJAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10.jar) UCHIJAA arsmagica2{1.4.0.009} [Ars Magica 2] (1.7.10_AM2-1.4.0.009 (1).jar) UCHIJAA AgravaineLib{0.12} [AgravaineLib] (AgravaineLib-0.12.jar) UCHIJAA Ambience{GRADLE:VERSION-GRADLE:BUILD} [Ambience] (ambience-1.0-31.7.10.jar) UCHIJAA AncientWarfare{2.4.114-beta-MC1.7.10} [Ancient Warfare Core] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareAutomation{2.4.114-beta-MC1.7.10} [Ancient Warfare Automation] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareNEIPlugin{2.4.114-beta-MC1.7.10} [Ancient Warfare NEI Plugin] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareNpc{2.4.114-beta-MC1.7.10} [Ancient Warfare NPCs] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareStructure{2.4.114-beta-MC1.7.10} [Ancient Warfare Structures] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA antiqueatlas{4.4.4} [Antique Atlas] (antiqueatlas_1.7.10_4.4.4.jar) UCHIJAA armourersWorkshop{1.7.10-0.43.1} [Armourer's Workshop] (Armourers-Workshop-Mod-1.7.10.jar) UCHIJAA plushieWrapper{0.0.0} [Plushie Wrapper] (Armourers-Workshop-Mod-1.7.10.jar) UCHIJAA Artifacts{1.0.6} [Artifacts] (artifacts_1.0.6.jar) UCHIJAA CarpentersBlocks{3.3.8.1} [Carpenter's Blocks] (Carpenters-Blocks-Mod-1.7.10.jar) UCHIJAA GollumCoreLib{2.0.0} [Gollum Core Lib] (GollumCoreLib-2.0.0-1.7.10.jar) UCHIJAA CastleDefenders{3.0.0 [Build Smeagol]} [Castle Defender] (Castle-Defender-Mod-1.7.10.jar) UCHIJAA craftguide{1.6.8.2} [CraftGuide] (CraftGuide_1.6.8.2_forge.jar) UCHIJAA CraftHeraldry{1.1.3} [CraftHeraldry] (CraftHeraldry-Mod-1.7.10.jar) UCHIJAA dimdoors{2.2.5-test9} [Dimensional Doors] (DimensionalDoors_2.2.5_test9.jar) UCHIJAA eplus{3.0.2-d} [Enchanting Plus] (Enchanting-Plus-Mod-1.7.10.jar) UCHIJAA ExpOre{1.1a} [Exp Ore] (ExperienceOre-1.1a.jar) UCHIJAA FoodPlus{3.0rS} [§bFood Plus] (food_plus_mod_1.7.10.jar) UCHIJAA battlegear2{1.7.10} [Mine & Blade Battlegear 2 - Bullseye] (Mine-Blade-Battlegear-2-Mod-1.7.10.jar) UCHIJAA AencEx{0.0.1} [AencEx] (more_enchantments_mod_1.7.10 (1).jar) UCHIJAA me{1.0.1} [More Enchantments] (more_enchantments_mod_1.7.10 (1).jar) UCHIJAA moreplayermodels{1.7.10b} [MorePlayerModels] (MorePlayerModels_1.7.10b.jar) UCHIJAA necromancy{1.7.0} [Necromancy] (necromancy_mod_1.7.10.jar) UCHIJAA newdungeons{0.3} [New Dungeons] (new_dungeons_mod_1.7.10.jar) UCHIJAA numina{0.4.1.104} [Numina] (Numina-Mod-1.7.10.jar) UCHIJAA rfpr{5.1.0} [Real First-Person Render] (Real+First-Person+Render-1.7.10-5.1.0.jar) UCHIJAA Roguelike{1.4.4} [Roguelike Dungeons] (roguelike-1.7.10-1.4.4.jar) UCHIJAA TwilightForest{2.3.7} [The Twilight Forest] (twilightforest_1.7.10_2.3.7.jar) UCHIJAA witchery{0.24.1} [Witchery] (witchery_1.7.10_0.24.1 (1).jar) UCHIJAA Your Records Mod{Alpha} [§aYour Records Mod] (Your-Records-Mod-1.7.10.jar) UCHIJAA zeldaswordskills{1.7.10-2.2.6} [Zelda Sword Skills] (Zelda-Sword-Skills-Mod-1.7.10.jar) GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread. Profiler Position: N/A (disabled) Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Player Count: 0 / 8; [] Type: Integrated Server (map_client.txt) Is Modded: Definitely; Client brand changed to 'fml,forge'

Help me, please, i don't want to lose world.

Looks like a corrupted file, try this thread:

https://www.minecraftforum.net/forums/minecraft-java-edition/discussion/297844-official-corrupted-save-recovery-thread

The fact that it's modded makes it more complicated.

Quote from Unlucky_Mage»

When im try to launch my world, game crashes

Crash report:

---- Minecraft Crash Report -------- Minecraft Crash Report ----// Would you like a cupcake?
Time: 01.05.18 14:12Description: Loading NBT data
java.util.zip.ZipException: incorrect data check at java.util.zip.InflaterInputStream.read(Unknown Source) at java.io.BufferedInputStream.read1(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at java.io.DataInputStream.readFully(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at net.minecraft.nbt.NBTTagCompound.func_152448_b(NBTTagCompound.java:388) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:50) at net.minecraft.nbt.NBTTagCompound.func_152449_a(NBTTagCompound.java:398) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:52) at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:170) at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:125) at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:120) at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:121) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:20) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:12) at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:343) at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126) at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265) at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:130) at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:153) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
A detailed walkthrough of the error, its code path and all known details is as follows:---------------------------------------------------------------------------------------
-- Head --Stacktrace: at java.util.zip.InflaterInputStream.read(Unknown Source) at java.io.BufferedInputStream.read1(Unknown Source) at java.io.BufferedInputStream.read(Unknown Source) at java.io.DataInputStream.readFully(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at java.io.DataInputStream.readUTF(Unknown Source) at net.minecraft.nbt.NBTTagCompound.func_152448_b(NBTTagCompound.java:388) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:50)
-- NBT Tag --Details: Tag name: Level Tag type: 10Stacktrace: at net.minecraft.nbt.NBTTagCompound.func_152449_a(NBTTagCompound.java:398) at net.minecraft.nbt.NBTTagCompound.func_152446_a(NBTTagCompound.java:52) at net.minecraft.nbt.CompressedStreamTools.func_152455_a(CompressedStreamTools.java:170) at net.minecraft.nbt.CompressedStreamTools.func_152456_a(CompressedStreamTools.java:125) at net.minecraft.nbt.CompressedStreamTools.func_74794_a(CompressedStreamTools.java:120) at net.minecraft.world.chunk.storage.AnvilChunkLoader.loadChunk__Async(AnvilChunkLoader.java:121) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:20) at net.minecraftforge.common.chunkio.ChunkIOProvider.callStage1(ChunkIOProvider.java:12) at net.minecraftforge.common.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:343) at net.minecraftforge.common.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:302) at net.minecraftforge.common.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:12) at net.minecraft.world.gen.ChunkProviderServer.loadChunk(ChunkProviderServer.java:126) at net.minecraft.world.gen.ChunkProviderServer.func_73158_c(ChunkProviderServer.java:101) at net.minecraft.server.MinecraftServer.func_71222_d(MinecraftServer.java:265) at net.minecraft.server.integrated.IntegratedServer.func_71247_a(IntegratedServer.java:130) at net.minecraft.server.integrated.IntegratedServer.func_71197_b(IntegratedServer.java:153) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387) at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
-- System Details --Details: Minecraft Version: 1.7.10 Operating System: Windows 7 (amd64) version 6.1 Java Version: 1.8.0_161, Oracle Corporation Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation Memory: 1800701072 bytes (1717 MB) / 2134114304 bytes (2035 MB) up to 3207856128 bytes (3059 MB) JVM Flags: 8 total; -Xmx1532M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -Xms2G -Xmx3G -Xmx3072M AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used IntCache: cache: 15, tcache: 0, allocated: 13, tallocated: 95 FML: MCP v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1614 Optifine OptiFine_1.7.10_HD_U_E7 40 mods loaded, 40 mods active States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored UCHIJAA mcp{9.05} [Minecraft Coder Pack] (minecraft.jar) UCHIJAA FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UCHIJAA Forge{10.13.4.1614} [Minecraft Forge] (forge-1.7.10-10.13.4.1614-1.7.10.jar) UCHIJAA AM2-Preloader{0.0.3} [AMCore] (minecraft.jar) UCHIJAA TooManyItems{1.7.10} [TooManyItems] (minecraft.jar) UCHIJAA AnimationAPI{1.2.4} [AnimationAPI] (AnimationAPI-1.7.10.jar) UCHIJAA arsmagica2{1.4.0.009} [Ars Magica 2] (1.7.10_AM2-1.4.0.009 (1).jar) UCHIJAA AgravaineLib{0.12} [AgravaineLib] (AgravaineLib-0.12.jar) UCHIJAA Ambience{GRADLE:VERSION-GRADLE:BUILD} [Ambience] (ambience-1.0-31.7.10.jar) UCHIJAA AncientWarfare{2.4.114-beta-MC1.7.10} [Ancient Warfare Core] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareAutomation{2.4.114-beta-MC1.7.10} [Ancient Warfare Automation] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareNEIPlugin{2.4.114-beta-MC1.7.10} [Ancient Warfare NEI Plugin] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareNpc{2.4.114-beta-MC1.7.10} [Ancient Warfare NPCs] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA AncientWarfareStructure{2.4.114-beta-MC1.7.10} [Ancient Warfare Structures] (ancientwarfare-2.4.115-beta-MC1.7.10-FULL.jar) UCHIJAA antiqueatlas{4.4.4} [Antique Atlas] (antiqueatlas_1.7.10_4.4.4.jar) UCHIJAA armourersWorkshop{1.7.10-0.43.1} [Armourer's Workshop] (Armourers-Workshop-Mod-1.7.10.jar) UCHIJAA plushieWrapper{0.0.0} [Plushie Wrapper] (Armourers-Workshop-Mod-1.7.10.jar) UCHIJAA Artifacts{1.0.6} [Artifacts] (artifacts_1.0.6.jar) UCHIJAA CarpentersBlocks{3.3.8.1} [Carpenter's Blocks] (Carpenters-Blocks-Mod-1.7.10.jar) UCHIJAA GollumCoreLib{2.0.0} [Gollum Core Lib] (GollumCoreLib-2.0.0-1.7.10.jar) UCHIJAA CastleDefenders{3.0.0 [Build Smeagol]} [Castle Defender] (Castle-Defender-Mod-1.7.10.jar) UCHIJAA craftguide{1.6.8.2} [CraftGuide] (CraftGuide_1.6.8.2_forge.jar) UCHIJAA CraftHeraldry{1.1.3} [CraftHeraldry] (CraftHeraldry-Mod-1.7.10.jar) UCHIJAA dimdoors{2.2.5-test9} [Dimensional Doors] (DimensionalDoors_2.2.5_test9.jar) UCHIJAA eplus{3.0.2-d} [Enchanting Plus] (Enchanting-Plus-Mod-1.7.10.jar) UCHIJAA ExpOre{1.1a} [Exp Ore] (ExperienceOre-1.1a.jar) UCHIJAA FoodPlus{3.0rS} [§bFood Plus] (food_plus_mod_1.7.10.jar) UCHIJAA battlegear2{1.7.10} [Mine & Blade Battlegear 2 - Bullseye] (Mine-Blade-Battlegear-2-Mod-1.7.10.jar) UCHIJAA AencEx{0.0.1} [AencEx] (more_enchantments_mod_1.7.10 (1).jar) UCHIJAA me{1.0.1} [More Enchantments] (more_enchantments_mod_1.7.10 (1).jar) UCHIJAA moreplayermodels{1.7.10b} [MorePlayerModels] (MorePlayerModels_1.7.10b.jar) UCHIJAA necromancy{1.7.0} [Necromancy] (necromancy_mod_1.7.10.jar) UCHIJAA newdungeons{0.3} [New Dungeons] (new_dungeons_mod_1.7.10.jar) UCHIJAA numina{0.4.1.104} [Numina] (Numina-Mod-1.7.10.jar) UCHIJAA rfpr{5.1.0} [Real First-Person Render] (Real+First-Person+Render-1.7.10-5.1.0.jar) UCHIJAA Roguelike{1.4.4} [Roguelike Dungeons] (roguelike-1.7.10-1.4.4.jar) UCHIJAA TwilightForest{2.3.7} [The Twilight Forest] (twilightforest_1.7.10_2.3.7.jar) UCHIJAA witchery{0.24.1} [Witchery] (witchery_1.7.10_0.24.1 (1).jar) UCHIJAA Your Records Mod{Alpha} [§aYour Records Mod] (Your-Records-Mod-1.7.10.jar) UCHIJAA zeldaswordskills{1.7.10-2.2.6} [Zelda Sword Skills] (Zelda-Sword-Skills-Mod-1.7.10.jar) GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread. Profiler Position: N/A (disabled) Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used Player Count: 0 / 8; [] Type: Integrated Server (map_client.txt) Is Modded: Definitely; Client brand changed to 'fml,forge'

Help me, please, i don't want to lose world.

Hmm, maybe try loading it in MCEdit, turning bits of it into schematics, then plopping them down into a new world made with the same seed. You'll have to copy over some level data concerning your inventory, but it should eventually work. Also, check this thread out for some help: Official Corrupted Save Recovery Thread.

And, how to open the MCEdit? I open it and nothing heppend.

Quote from Unlucky_Mage»

And, how to open the MCEdit? I open it and nothing heppend.

You have to open the world in MCEdit. Click on Open World, and you should see your saves folder. Find the save you want, look in its folder, then double-click level.dat.