Hi!
Unfortunatly the problem still persists. (I already added the required lines to Startup and the reference to lodash in Host.)
What I managed to find out so far:
The exception happens on a line: a=a.replace("{1}",c).replace("{0}",u) where the "a" is undefined.
I attached screenshots, so you can see other variable values in the function. (I don't know if its a generated file, but I hope I could help finding the problem.
Attachment:
Archívum_eb2ecef3.zip