pdf cannot be moved

When I attach a PDF to an event, an error message "File cannot be moved" appears.
The error message only appears with PDFs. Images can be attached and moved without problems.
What could be wrong with my installation?

That's strange to me. Could you please submit a support ticket sending us:

- Super admin account
- Tell us step by step what we need to do to see the error

We are going to check to see why the error happens and get it sorted

Regards,

Tuan

I just found the problem. The post_max_size and upload_max_filesize were too small. It was a coincidence that PDFs always didn't work. Even bigger pictures didn't work.