after getting advices from another forum, I was finally able to finish the first version my mod I have been working on for about a week. And while the mod has been fully tested and worked just fine in Eclipse, a new bug appeared after mod build. The purpose of the mod is to assign random names to generated structures and then give players books containing info about those structures. (As I already said in one of my older posts, it is actually not my original mod, but rather an update of an old mod made by Astrotibs that hasn't been updated since 1.12.2). The issue is with formatting of the created books. In Eclipse, the books looked like what's depicted in picture Structure book (Eclipse). However, after the mod has been built and tried in regular Minecraft, something happened with the formatting. The issue is depicted in picture Structure book (Minecraft). (Don't mention the words Tandi/Teralbydgeeft, those are just randomly generated names for structures). The mod builder probably messed up the formatting characters in the code. Does anyone have any idea how to fix this? Thanks for any response.