I've deleted the web.base.url entry in settings-technical-system parameters.
Now I get this error:
Error message:
Error to render compiling AST
TypeError: unsupported operand type(s) for +: 'bool' and 'str'
Template: web.frontend_layout
Path: /t/html/head/t[6]/t[1]
Node:
The error occured while rendering the template web.frontend_layout and evaluating the following expression:
Any idea on how to solve this problem.