I cannot upload Pdf to create Galley

Greetings,
Please i need assistance with how to solve the error problem as shown in the attached screenshot. I cannot upload pdf to create a galley. I get the error "


HTTP Error"

Hi @David_Oguche,

What OJS version are you using, also, have you done any change to OJS recently or the error appeared out of the blue?

Best regards,
Josh Noronha