Trying to add a Logo to Email Templates but get an Error!

[IlkinAgayev]

Hello everyone,

Hopefully you are fine.

If I try to upload a logo for email templates using the choose file dialog, it says

"Image file is invalid. Make sure the format is valid (jpeg/png/svg/psd/gif) and the image isn't corrupt."

Any ideas? I'm confident the file is a working image file.

I tried many files and always get that error

Furthermore I tried on many devices and browsers like chrome, Hopefully you guys help me

Thanks in advance