So, I know the method in which I got this error is VERY OBVIOUSLY UNSUPPORTED

but I said screw it and patched the mod.json file to run on 1.19.4 and... well...
this is it without the patch (and log)

https://mclo.gs/4AW8SsI

and with the "patch"

https://mclo.gs/Ko3biRC

By far, the weirdest non-crash issue with a mod being forced to run on 1.19.4 when it only supports 1.19.3

Sorry for the late reply, but at this point 1.19.x wont be officially supported anymore.

oh, and with the "patch" the "search items" tab is just *empty"