Compiles OK, but when executed just stop on Starting host
### Description

I have downloaded the latest version, compiled with dotnet sdk 5, I have already working coins, config files from version 50 that is still running smoothly on a ubuntu 18.04 dotnet 2.2 installation.
But when I executed, never really starts, just stay a Starting hosts.

### Steps to Reproduce

1. Download the git source
2. Compile it as explained on README
3. copy config.json and coins.jon to the build location
4. Run with either dotnet Miningcore.dll o ./Miningcore.exe 

in both cases just do nothing

### Expected behavior

That the pool starts. This is the capture from the older working version
2021-06-19 09:28:21.9786] [I] [Core] .NET Core 4.6.28207.03 on Linux 4.15.0-135-generic #139-Ubuntu SMP Mon Jan 18 17:38:24 UTC 2021 [X64] 
[2021-06-19 09:28:22.1934] [I] [Core] 13 coins loaded from /home/pool/pool/coins.json 
[2021-06-19 09:28:22.3787] [I] [ShareRecorder] Online 
[2021-06-19 09:28:22.8240] [I] [Core] API Access to /api/admin restricted to 127.0.0.1,::1,::ffff:127.0.0.1 
[2021-06-19 09:28:22.8240] [I] [Core] API Access to /metrics restricted to 127.0.0.1,::1,::ffff:127.0.0.1 
[2021-06-19 09:28:23.0937] [I] [Core] API access limited to 5 requests per 1s, except from 127.0.0.1, ::1, ::ffff:127.0.0.1 
[2021-06-19 09:28:23.1345] [I] [Core] API Online @ 0.0.0.0:4000 
[2021-06-19 09:28:23.1345] [I] [Core] Prometheus Metrics Online @ 0.0.0.0:4000/metrics 
[2021-06-19 09:28:23.1345] [I] [Core] WebSocket notifications streaming @ 0.0.0.0:4000/notifications 
[2021-06-19 09:28:23.1664] [I] [PayoutManager] Online 
[2021-06-19 09:28:23.1778] [I] [StatsRecorder] Online 
[2021-06-19 09:28:23.1900] [I] [PayoutManager] Processing payments for pool xxxxxx 
[2021-06-19 09:28:23.2241] [I] [xxxxxx] Starting Pool ... 
[2021-06-19 09:28:23.2513] [I] [xxxxxx] Starting Job Manager ... 
[2021-06-19 09:28:23.6595] [I] [xxxxxx] All daemons online 
[2021-06-19 09:28:23.8241] [I] [xxxxxx] All daemons synched with blockchain 

### Actual behavior
WIth log=debug:

[2021-06-19 15:27:07.9450] [I] [Core] .NET 5.0.7 on Linux 5.4.0-74-generic #83-Ubuntu SMP Sat May 8 02:35:39 UTC 2021 [X64] 
[2021-06-19 15:27:08.1914] [I] [Core] Prometheus Metrics 0.0.0.0:4000/metrics 
[2021-06-19 15:27:08.1927] [I] [Core] WebSocket notifications streaming 0.0.0.0:4000/notifications 
[2021-06-19 15:27:09.3836] [D] [Host] Hosting starting 

And just sit there neverending.

### Reproduces how often

Always!

### Version

Release 53, 52 and 51
Ubuntu 20.04

### Additional Information


