Broken pipe when browsing scanners

Hi everyone! I’m new here and to GVM.
I have downloaded and built GSE 21.04 from the git repository and followed the instructions to install it. GVM is up and running, I am able to add targets, assets, etc. I have also ran all the sync commands, the NVT DB is done.
Problem comes when I try to browse the scanners on Scan Configs, I get the list, but when I want to browse the NVTs, and go into more details I get empty results. On the log I get the following:

write_to_client_unix: failed to write to client: Broken pipe

Also, if I refresh the Scan Configs page, I get a An internal error occurred while getting resources list. The current list of resources is not available. Diagnostics: Failure to receive response from manager daemon.
I was able to increase the debugging and see the problem comes after querying the DB. These are the last lines:

md manage: DEBUG:2021-08-04 12h31.12 UTC:8323: sql: SELECT value FROM settings WHERE uuid = ‘76374a7a-0569-11e6-b6da-28d24461215b’ AND ((owner IS NULL) OR (owner = (SELECT users.id FROM users WHERE users.uuid = ‘6c1bb3c4-8b3a-4c19-9b3d-ad547ff2895d’))) ORDER BY coalesce (owner, 0) DESC;
md manage: DEBUG:2021-08-04 12h31.12 UTC:8323: sql_x end (SELECT value FROM settings WHERE uuid = ‘%s’ AND ((owner IS NULL) OR (owner = (SELECT users.id FROM users WHERE users.uuid = ‘%s’))) ORDER BY coalesce (owner, 0) DESC;)
md main: DEBUG:2021-08-04 12h31.12 UTC:8323: -> client: first=1 rows=10 sort=namefirst=1rows=10sort=namenameascending<config_count>1311</config_count></get_configs_response>
md gmp: DEBUG:2021-08-04 12h31.12 UTC:8323: client state set: 1
md main: DEBUG:2021-08-04 12h31.12 UTC:8323: EOF reading from client
md main:WARNING:2021-08-04 12h31.12 UTC:8323: write_to_client_unix: failed to write to client: Broken pipe
md main: DEBUG:2021-08-04 12h31.12 UTC:8323: Cleaning up
md main: DEBUG:2021-08-04 12h31.12 UTC:8323: Exiting

Thanks in advance for any help.
Best
Lior.