Report Task type error with Excel format

Summary:

Hi experts,

we have built a journey where a task is configured as a report task type, the report is in excel format and it seems to work perfectly. (We are able to download the report by clicking on the link), but the problem is when we try to complete task by clicking on the "DONE" button, an error shows as following:

Please let us know if Journey - Report task type support excel formats, it seems strange that we are able to download it but not to proceed.

Thank you,
Marlon

Version (include the version you are using, if applicable):