Error with Bulk Uploaded with CSV

Hello,

I am receiving the below error when trying to use the bulk uploader after choose file and click in the blue button “Upload 301s” —

Invalid file. Use the below for debugging and when asking for support.

File: Array ( [name] => 301-gp.csv [type] => [tmp_name] => [error] => 1 [size] => 0 )

Approved Mime Types:
application/csv
application/excel
application/vnd.ms-excel
application/vnd.msexcel
application/octet-stream
application/data
application/x-csv
application/txt
text/anytext
text/csv
text/x-csv
text/plain
text/comma-separated-values

https://ww.wp.xz.cn/plugins/simple-301-redirects-addon-bulk-uploader/