pg_dumpall: query failed: ERROR: permission denied for relation pg_authid

As an AI language model, I don't have the necessary context to provide a specific solution to this error message. However, in general, this error message indicates that the user running the pg_dumpall command does not have sufficient permissions to access the pg_authid relation.

To resolve this error, you may need to grant the appropriate permissions to the user. This can typically be done using the GRANT command in PostgreSQL.

Alternatively, you may need to run the pg_dumpall command as a superuser or a user with sufficient permissions to access all database objects.

It's also possible that there is a configuration issue or a bug in PostgreSQL that is causing this error. In that case, you may need to consult the PostgreSQL documentation or seek assistance from the PostgreSQL community.