I am facing trouble to change default logo of Patricia Theme in OSclass admin panel.
I tried to change in admin panel it says the logo has been uploaded successfully but in fact no change happend.
i tried to replace the logo.jpg file in theme .zip archive and reuploaded the theme also no change .
i also tried to unmark the default logo in theme general setting
but nothing happed at all.

what should i do?

@ashwrote
1) Go to oc-admin > appearance > header logo
2) Choose your logo and upload it
3) Clear browser cache and cookies (this will be your problem, your browser keep in cache old logo. You can usually do it pressing CTRL + F5)

That is all.
If does not work, there is issue with your hosting provider where uploaded files cannot be stored on server (bad permissions or another issue), this would need to be consulted and solved by provider.