Failed to compile initial state with computed vars

I cannot get rid of this error: while compiling I get the console message
Warning: Failed to compile initial state with computed vars, excluding them: 2169,

and in the browser I get this error:
Server Error TypeError: Cannot read properties of undefined (reading 'map')

Also when going back in the history of my app, I keep getting this error on versions that have worked for weeks.

Any hints?