@tatuh
Hello,
I think it might be your certificates, but I’m unsure.
Chrome be a little weird at times, have you tried other browsers?
It would be greatly appreciated to have more information about your Graylog environment like your graylog configuration file, and how you configured nginx. Please take a look at the link below.
Details you should always include
Did you see any of these posts here that might resemble your issue?
Have you looked here ? Maybe something was over looked when creating certificates for HTTPS.
If this doesn’t help, at this point I’m not sure. If I had this issue with a Graylog installation, I would remove nginx from the equation to see if everything functions as expected (i.e., https) Then roll into securing it. That way if something weird pops up I know for sure where the issues is from.
All I can do is offer suggestions and speculate sorry I can’t be more help.