QBO Sync Error "/var/www/html/vendor/beanworks/quickbooks-online-v3-sdk/src/DataService/DataService.php - 296 - CheckNullResponseAndThrowException - Response Null or Empty"

Cause:
"HST/GST Payable" tax field has been selected while coding an invoice but there was no value entered for that field ($0.00 for each line item)

Resolution:
Reset an invoice, remove "HST/GST Payable" from the tax field and re-process that invoice.