Upgarde Avaliable Error In Upgrading

Good Day!

I am getting the below message in my inbox from CS-CART.

"A new version of Multi-Vendor is available. If you want to upgrade to the latest version now, click here."

But when i click on it to install the upgrade its getting stuck on "copy files:app" .

Please help me with possible reason for the error.

any help will be highly appriciated.

Kind Regards

Imran

Check upgrade logs

var/upgrade/core_log.txt