Before this error was coming while I was creating new site.
I solved this error as guided by @flexy2ky
[Guide] How to install ERPNext v14 on Linux Ubuntu (step-by-step instructions) - #198 by flexy2ky
Now the same error was coming while installing app on site.
Its updating very slow, It took more than 30 min to complete 28%
Please suggest what should I do?
If I stop the process what the correct way to start fresh install again.