Support File does not appear to be a valid add-on archive as expected.

[krone]

Hello people

I have the following problem
I get the following message when I want to install an addon
File does not appear to be a valid add-on archive as expected.
How can I solve that please?
this happens with every addon upload I do

and yes, I installed the latest software from xenforo

 

[MiooMoo]

How can I solve that please?

What error text are you getting?

 

[krone]

When I try to install an add-in I get this error message
look at the screen

Screenshot

Captured with Lightshot

prnt.sc

 

[MiooMoo]

look at the screen

XenForo - How to install addon on Xenforo?

If you are running XenForo 2.1 or newer, you may be able to install or upgrade an add-on by uploading the zip file directly into the control panel. This requires a compatible server configuration and a change to the src/config.php file. To enable...

xnforo.ir