Unable to make fronting work: protocol_error tls_invalid_digest when connecting with Chrome

[akanashin]

Hey!

1. Installed MTProxy,
   1.1. Configured fronting to my local host using fake domain name
2. Installed NGinx on 127.0.0.1:1443
   2.1. Created and added to configuration local certificates to be used with HTTPS
   2.2. Created simple HTML page "welcome"
3. Added my fake domain name to /etc/hosts, address 127.0.0.1
4. Verified that PING, SSH know that this fake domain name leads to 127.0.0.1

Now, when I'm connecting to proxy with Chrome, connection drops and i see following in logs:

2026-04-17T15:18:41.641885+00:00 info: mtp_handler_1: new connection my external IP:46121
2026-04-17T15:18:41.653770+00:00 warning: my external IP: protocol_error tls_invalid_digest <<38,78,133,110,23,220,121,50,78,131,59,89,6,255,192,173,2,4,30,164,69,179,148,136,17,242,243,44,6,103,218,135>>
2026-04-17T15:18:41.653917+00:00 info: terminate normal

Where to look now? Does the system have to run with my configuration (fake domain name and local certificates) at all?
Thanks