when i try to load an old or a new world the loading process goes until 100% then minecraft crash without giving me crash log or report

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How about providing versions of JEI, Minecraft, Forge and Java. At the same time you could upload latest.log

everytime i try to launch a world with JEI when it gets to "saving world" the app crashes/closes but everytime i remove the mod from the mod folder it works fine but when i put back in it doesn't work. idk if it's because i ran out of storage or i have too much mods

Thanks for the report!
I need some more information to solve this issue, please paste your full fml-client-latest.log or latest.log to https://gist.github.com and link it here.