Hi Marcos!
Thank you for reaching out, I’ve got an email thread going with support. Just in case, we’re using version v0.3.17 of the certified File connector.
We have gotten a few different errors:
• Cannot invoke “io.airbyte.config.StandardCheckConnectionOutput.getStatus()” because the return value of “io.airbyte.config.ConnectorJobOutput.getCheckConnection()” is null
• Excel file format cannot be determined, you must specify an engine manually.