For anyone who has similar issues... After a couple days of messing around;

I am guessing manifest_version 2 requires stricter associations.

With my last screenshot as reference:
Delete the entire "web_accesible_resources" block.
Delete the entire "key" line.
Change the "manifest_version" to "3,"

Loaded fine.
This is probably a janky solution? idk if it will cause any issues elsewhere.

Hello! I am trying to create a cursor mod for OperaGX, but I keep running into this issue in the attached screenshots, and cannot seem to fix it in my manifest.json.

I copy pasted a default "web_accessible_resources" section from a windows forum and entered my custom data, but it seems to not be working.

Originally, since there was no info online that I could find on how to start creating a cursor mod, I just copied the files of a cursor mod already on the Opera GX mods section. And that one did not even have a "web_accessible_resources" section, so I am lost.

Further, the mod came with an already generated "key" and "hash" and "parent_hash", idk if I need to change those, or if they are a none issue.

Any direction on what I am doing wrong would be appreciated!