Ok, I will do that.
By the way, yes this linux host is in company intranet. And it can't get to internet. However I have checked firewall logs this afternoon (and also at the moment), and there were no policy violations. So it didn't even try to get to internet.
One thing I noticed from console log though:
Refused to execute inline script because it violates the following Content Security Policy directive: "script-src 'unsafe-eval' 'self'". Either the 'unsafe-inline' keyword, a hash ('sha256-SHHSeLc0bp6xt4BoVVyUy+3IbVqp3ujLaR+s+kSP5UI='), or a nonce ('nonce-...') is required to enable inline execution.
bootstrap.js:10 ^ A single error about an inline script not firing due to content security policy is expected!
Network tab had a few 304 (most were 200):