I have a custom mod. Behaviour and resource pack folders. It is recognised by Minecraft when running a local world. The folders are in the correct place (not in the development folders). I have updated the manifest.json files in both the resource and behaviour folders with a new version in all the correct places. When trying to upload the pack to my realm it ignores it since the last client update. Before the 1.21.20 it used to upload after I changed the version number in the manifest.json. I have tried it several times but nothing.