Hi @codeware We have not faced such an issue on our end. So we will have to check it on your server.
So please raise a ticket and provide us your FTP details and the URL on which you are trying to do the installation.
https://webkul.uvdesk.com/en/customer/create-ticket/

@lafora

This issue might occur because of server request timeout.

Please make sure your server is configured with the recomended setting for QloApps : https://qloapps.com/install-qloapps/#section-8
Make sure to set server max_execution_time to 500.

If the issue still persist, do let us know.

Hello @Sheik
I have already mentioned this error and its solution in one of the topic.
Please follow this link to get the solution: https://forums.qloapps.com/topic/8/error-during-installation-all-parts-of-a-primary-key-must-be-not-null-if-you-need-null-in-a-key-use-unique-instead-error-sql-has-happened

I was facing same issue then someone helped me out. Please visit: https://forums.qloapps.com/topic/139/unable-to-change-text-into-contact-us-page.