SonarQube 8.9 doesn’t start, it’s blocked in loading page after login

i need help with SonarQube. I’m trying to use the latest verions (8.9) on CentOS 7, i did all but i’m not able to see the main page because it gets stuck in the loading page after login. There aren’t error in log file, the unique “error” that i found, if i inspect the source, is: Application failed to start! SyntaxError: Unexpected token x in JSON at position 556.

Any suggest??

Error:

Solution 1:

I solved the problem after time and time. It was so strange by the way after an accuratly check of the network i find the problem. It was the firewall that blocked some request after login page, i hope this can help those in this same situation..