Smartvisu V3.2.2 -> V3.5 Update Fehler

[Hackstall]

error: Unable to find template "lib.html" (looked into: /var/www/html/smartvisu/apps, /var/www/html/smartvisu/pages/Rosenstr.35, /var/www/html/smartvisu/dropins, /var/www/html/smartvisu/pages/base).
file: index.html
line: 15

Yes I have read the installation procedure but I still received the error as given above.

Can you please help out here.

Thanks Andreas