Mods not working

[no mods work anymore ]

Steps to Reproduce:

1. I get multiple new mods
2. [I install the mods and put them in separate worlds 
3. [Now for some reason mods that have worked before and new mods both don't work at all anymore]

Observed Results:
[None of the things from the mods work]

Expected Results:
[they should work, at least to some degree ]

Screenshots/Videos attached: [please attach an image or short video]

Notes: