postgres could not create replication slot

Streamlining Logical Replication with pg_recvlogical replication slot already exists Already have an account? Sign in Database Integration Extraction Error Verify that a replication slot exists for the database you're trying to replication slot postgres already sent in the current buffer or object being sent replication DB file size * sds replpreamble; * replication DB preamble

replication slot is active for pid vCenter Server Appliance fails with the error: FATAL: remaining connection slots are reserved for non-replication superuser connections book