"Lua reported a runtime error"

[ArkJs22]

I can't apply any effects anymore.
I tried to reinstall everything and now it appears this:
File "C:\Program Files\Aegisub\automation\include\Effector-utils-lib-3.3.lua", line 16457
<anonymous function at lines 16307-16595>
File "C:\Program Files\Aegisub\automation\include\Effector-utils-lib-3.3.lua", line 15610
preprosses_macro
File "C:\Program Files\Aegisub\automation\include\Effector-utils-lib-3.3.lua", line 15536
run_fx
File "C:\Program Files\Aegisub\automation\autoload\Effector-3.3.lua", line 221
do_fx
attempt to index local 'file_save' (a nil value)

[amanosatosi]

press windows + R
type %appdata% and enter
search for aegisub folder
delete the aegisub folder
uninstall aegisub
reinstall aegisub