[suggestion/bug] main_ex.lua interferes with past versions of other mods (i honestly don't know how) ?

i made a mod that regroups other small mods (https://steamcommunity.com/sharedfiles/filedetails/?id=3033761471&searchtext=the+sussy+moai), and recently pruned it of two lua using mods that do not work anymore. Somehow, main_ex.lua (the repentogon file in isaac/resources/scripts) redefined the "require" function in such a way that it thinks that my mod's main.lua still calls upon the deleted mod's lua, through the deleted line "require(character_specific_items)", thereby causing an error mesage to appear in the console upon run start.
please keep in mind that i'm in no way an expert in coding and may have done a horrible lapse in my judgment.
(side note, i really love repentogon. good job)

Start with isaac/resources/scripts/main_ex.lua and inspect how its redefined require function resolves Lua modules. Reproduce the reported startup error using the described mod setup, including the deleted require(character_specific_items) line in main.lua. Done means an old or removed module reference no longer produces the reported console error.