I have my custom domain connected and running (bottom 1):
When I go to my site:
https://mysubdomain.mysite.app/.well-known/assetlinks.json
I see the assetlinks.json being created:
[{"relation":["delegate_permission/common.handle_all_urls"],"target":{"namespace":"android_app","package_name":"test.mycompany","sha256_cert_fingerprints":["XX:XX:XX:XX:4B:8A:A6:53:E1:4A:82:F6:B1:48:E0:22:XX:XX:XX:XX:XX:XX:XX:v:FD:93:XX:XX:XX:34:XX:84"]}}]
I removed the mysubdomain.mysite.app from the Dynamic Link Tab (because the links were not working) and tried to re-add it (after removing, the above json was still shown). But after re-adding this error was shown:
Am I supposed to use Filezilla and manually add a file called assetlinks.json? And what is the exact content of this json file? The error message talks about firebase.json, not assetlinks.json.

