The error message in the exportation modal is the wrong one

Short description: When you install the app for the first time the app is not correctly configured, so in the exportation modal, the error message should appear is the error from integration and not the generic error.

Steps to reproduce: 

1. Install the app Table Grid for the first time (verify if in menu Integrations appears the blue-button Configure)
2. Go to bulk export and try to export the template Table Grid from Store 

Actual Result: The generic error appears

Expected Result: The error from integrations should appear.