hi
have a strange 404 error in frontend when i want show the map:
404
[] operator not supported for strings

the console show the following:

GET https://engelkeller.ch/hotspot 500 (operator not supported for strings)
hotspot:1 Mixed Content: The page at 'https://engelkeller.ch/hotspot' was loaded over HTTPS, but requested an insecure stylesheet 'http://fonts.googleapis.com/css?family=Montserrat'. This request has been blocked; the content must be served over HTTPS.


what can i do for a working solution?


(i disable jch-optimize but it doesn't help)