upgrade problem 4.1.5

[azeribalasi]

version 3.x to 4 errors in this way when I got passed. but the update process completed successfully. i do not know where the error was doing. thank you for your help.

[Boofo]

There is no fetch_template in vb 4. You need to render them now and register any variables that will be used in the template.

[azeribalasi]

I have no idea how to do

[Boofo]

There are some good articles on here that explain a lot of that. Check the articles section. ;)