Since yesterday evening my Database Dashboards are not loading anymore - just an empty page after the animation with the circles - see screenshots below
“… has been blocked by CORS policy: Response to preflight request doesn’t pass access control check: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.”
you could get that behaviour if you added a domain to whitelist for your server
Yes, I did add a whitelist domain !
As this was done for security reasons I do not want to change that back - so is there any solution for it ?!
try to add more domains to that whitelist, including that one that tries to access it now
Thanks for your suggestion.
Tried it (e.g. adding the server URL - without the port,
but unfortunately does not work.
Would appreciate any other proposal or more specific info on that approach (e.g. on add other domains).
try to add the domain from that error, with subdomain and port
Subdomain with port seems to work 
Thanks so much !!