Submitted data not publishing on google sheet

Hi, my data when submitted are not publishing to google sheet, it keeps showing ACTIVE_PAUSE or Restart Publisher - Paused and when I log into my google console I keep seeing this error "org.opendatakit.aggregate.exception.ODKExternalServiceException: java.lang.NullPointerException
at org.opendatakit.aggregate.externalservice.GoogleSpreadsheet.insertData (GoogleSpreadsheet.java:649)"

All required APIs are enabled, my quotas are not exceeded and a billing account is added to the GCP platform.

Please help me out.
Farouq