Why is there error

There was a error message that said:
Got Error
MSG: Failed to load data from api
retrying in 3 seconds
Error: ParseError(Error(“unknown variant agent-over-limit, expected one of account-delete-scheduled, banned, has-message, email-not-verified, guest, ready”, line: 1, column: 139), 200, “{"status":"success","data":{"agent_id":"b3344dcb-3304-4376-a0b5-4a64ab317295","agent_type":"assignable","account_status":"agent-over-limit","tunnels":,"pending":}}”)

what does it mean?

I fixed it. Too many agents.