QB Issue Resolution:

The only shortcut is having one bill open from the vendor in question, click on Pay Bill and then all open bills for that vendor are displayed with the one you were in pre-checked.

Resolution for Issue 'Paying bills from vendor center' available: Yes (Solved).
Source: Intuit Community forum.

Paying bills from vendor center: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for paying bills
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Error Recovery for paying bills [Canada]
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