I see Init errors for "TimeoutExtension" " SteelUI"
"MoreQuestOptions" seems to have problems replacing some files and gives warnings (a sort of error that isn't critical and often can be ignored), my guess is these warnings were not a result of 2.5 und are unrelated to your problem. But this is just a guess, a mod only half applied can lead to malfunctions
Same for "SleepcapTower" and "MPLogue_Prefabs_7D2D_V2_0_1", b´both have problems applying their patches and may be non-functional or only half applied. But they seem to be about RWG, so likely unrelated.
Same for "IzPToolsAreMeleeWeapons", "Pants_Weapon_Pack" , "BetterBiomeStorms", "Bettermods", "Byteblazars_XFX", "Steel-UI-Backpack" "IZY_RMP_SG"
Now all of these warnings and errors are only hints that it could be one of those mods, especially those first ones with errors, but there is nothing definite. It could be a totally unrelated mod that interferes with new mechanics without generating a message at all. And also removing any mod from an existing game may result in the game malfunctioning in other ways. Furthermore you will have to consider any dependancies of mods to others. So please make a backup of everything before any tests if you want to continue a game instead of creating a new one.