yes, i'm sorry i put the wrong picture, it should have been this one (https://imgur.com/a/uFIXqIv), tho now i managed somehow to fix this "internal exception" problem.
now only one problem remains: when i try to add the Forge mod "Create" the server crashes during the boot-up process.
these are the logs that i copied from the server's console when the crash occurred: https://pastebin.pl/view/acafe721
(i had to copy the logs manually from the console, i should have managed to copy paste from start to finish the server's boot-up process but i think i missed in the middle some of the "[16:48:04] [main/WARN] [ne.mi.re.ForgeRegistry/REGISTRIES]:.........................." lines but these shouldn't be important i think)
i already tried to use the server without the mod "Create" and it works, but it would be awesome if there was a way to make this mod work too.
sorry, there's also this error that i don't understand regarding another mod: "[18:29:03] [main/ERROR] [mixin/]: Mixin config rottencreatures-common.mixins.json does not specify "minVersion" property"
these are the logs for this error: https://pastebin.pl/view/47a67516