Around Oct 18th, we received an undocumented error code:1 when we uploaded the data for Facebook Conversion via Graph API v20.0

Rerun on the next day was success.

Please help clarify the reason for error code. ===Raw log with redacted info with UTC timestamp in log=== 2024-10-18 23:00:10.590 +0000 [INFO] (0037:task-0000): > POST: https://graph.facebook.com/v20.0/9676177099xxxx/events 2024-10-18 23:00:11.220 +0000 [WARN] (0037:task-0000): POST data failed. Retrying 1/5 after 300 seconds. Message: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"AXfhAPvZDGEeiW4yVMuheJG"}} 2024-10-18 23:05:11.902 +0000 [WARN] (0037:task-0000): POST data failed. Retrying 2/5 after 600 seconds. Message: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"ACRf85TtrNEzpSyEJ7or-sl"}} 2024-10-18 23:15:12.542 +0000 [WARN] (0037:task-0000): POST data failed. Retrying 3/5 after 1200 seconds. Message: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"ArC_PO-BRjh7LQwg2q9v32Q"}} 2024-10-18 23:35:13.154 +0000 [WARN] (0037:task-0000): POST data failed. Retrying 4/5 after 1800 seconds. Message: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"AYJtjM_ys0D6Su_6Ml9Qo3y"}} 2024-10-19 00:05:14.041 +0000 [WARN] (0037:task-0000): POST data failed. Retrying 5/5 after 1800 seconds. Message: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"AL6NiyqYB8-Y8Yy7O9-1ABs"}} org.embulk.output.facebook_conversions.util.DefaultRetryable$ExceptionToRetry: {"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"AL6NiyqYB8-Y8Yy7O9-1ABs"}} 5:14.742 +0000 [WARN] (0037:task-0000): Giving up on retrying for POST data, first exception is [{"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"AXfhAPvZDGEeiW4yVMuheJG"}}], last exception is [{"error":{"message":"An unknown error has occurred.","type":"OAuthException","code":1,"fbtrace_id":"A3BtXPodRLXVDoyWTs1oVmI"}}]