What log patterns/codes point to specific error ownership?

Open the log file and check for the tag http_response.

This will show details of what was received from the API.

Error codes 5XX, 4XX would indicate an error on the API side.

Everything else means that the issue is either with the excel file, plugin, or the user’s system.

HTTP Status Code Reference:

https://restfulapi.net/http-status-codes/