[tor-relays] Problem moving my Tor Bridge Relay

[Cor.ling]

Hello,
I have a Tor Bridge and it worked well (thanks also for your kind support) but it doesn't work anymore after I tried to move it.
Basically I copied the 'Keys' folder (at /var/lib/tor/keys) on a USB flash drive. After that I put the folder into the /var/lib/tor folder of the new device (deleting the pre-existing "Keys" folder).
But I receive these errors on syslog (/var/log/syslog):

> "Jun 12 15:13:59 PC systemd[1]: Stopped Anonymizing overlay network for TCP.
> Jun 12 15:13:59 PC systemd[1]: Starting Anonymizing overlay network for TCP...
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.472 [notice] Tor 0.4.5.6 running on Linux with Libevent 2.1.12-stable, OpenSSL 1.1.1j, Zlib 1.2.11, Liblzma 5.2.5, Libzstd 1.4.8 and Glibc 2.33 as libc.
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.472 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.472 [notice] Read configuration file "/usr/share/tor/tor-service-defaults-torrc".
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.472 [notice] Read configuration file "/etc/tor/torrc".
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.474 [notice] Based on detected system memory, MaxMemInQueues is set to 2875 MB. You can override this by setting MaxMemInQueues by hand.
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.476 [warn] /var/lib/tor/keys is not owned by this user (debian-tor, 124) but by root (0). Perhaps you are running Tor as the wrong user?
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.476 [warn] Failed to parse/validate config: Couldn't access private data directory "/var/lib/tor/keys"
> Jun 12 15:13:59 PC tor[38309]: Jun 12 15:13:59.476 [err] Reading config failed--see warnings above.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Control process exited, code=exited, status=1/FAILURE
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Failed with result 'exit-code'.
> Jun 12 15:13:59 PC systemd[1]: Failed to start Anonymizing overlay network for TCP.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Scheduled restart job, restart counter is at 4.
> Jun 12 15:13:59 PC systemd[1]: Stopped Anonymizing overlay network for TCP.
> Jun 12 15:13:59 PC systemd[1]: Starting Anonymizing overlay network for TCP...
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.721 [notice] Tor 0.4.5.6 running on Linux with Libevent 2.1.12-stable, OpenSSL 1.1.1j, Zlib 1.2.11, Liblzma 5.2.5, Libzstd 1.4.8 and Glibc 2.33 as libc.
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.721 [notice] Tor can't help you if you use it wrong! Learn how to be safe at https://www.torproject.org/download/download#warning
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.721 [notice] Read configuration file "/usr/share/tor/tor-service-defaults-torrc".
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.721 [notice] Read configuration file "/etc/tor/torrc".
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.723 [notice] Based on detected system memory, MaxMemInQueues is set to 2875 MB. You can override this by setting MaxMemInQueues by hand.
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.726 [warn] /var/lib/tor/keys is not owned by this user (debian-tor, 124) but by root (0). Perhaps you are running Tor as the wrong user?
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.726 [warn] Failed to parse/validate config: Couldn't access private data directory "/var/lib/tor/keys"
> Jun 12 15:13:59 PC tor[38314]: Jun 12 15:13:59.726 [err] Reading config failed--see warnings above.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Control process exited, code=exited, status=1/FAILURE
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Failed with result 'exit-code'.
> Jun 12 15:13:59 PC systemd[1]: Failed to start Anonymizing overlay network for TCP.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Scheduled restart job, restart counter is at 5.
> Jun 12 15:13:59 PC systemd[1]: Stopped Anonymizing overlay network for TCP.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Start request repeated too quickly.
> Jun 12 15:13:59 PC systemd[1]: tor at default.service: Failed with result 'exit-code'.
> Jun 12 15:13:59 PC systemd[1]: Failed to start Anonymizing overlay network for TCP."

(i'm using a PC with Kubuntu 21.04 and I followed this guide for the setting up: https://community.torproject.org/relay/setup/bridge/debian-ubuntu/)

What can I do to solve these errors?
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