Constantly getting errors in output

[Brene]

The tile basically says it all, this is my fr24feed output:

~$ sudo fr24feed
/dev/shm/decoder.txt: Permission denied
[main][e]Could not create monitor file!
______  _  _         _      _                    _              _____    ___
|  ___|| |(_)       | |    | |                  | |            / __  \  /   |
| |_   | | _   __ _ | |__  | |_  _ __  __ _   __| |  __ _  _ __`' / /' / /| |
|  _|  | || | / _` || '_ \ | __|| '__|/ _` | / _` | / _` || '__| / /  / /_| |
| |    | || || (_| || | | || |_ | |  | (_| || (_| || (_| || |  ./ /___\___  |
\_|    |_||_| \__, ||_| |_| \__||_|   \__,_| \__,_| \__,_||_|  \_____/    |_/
               __/ |
              |___/
[main][i]FR24 Feeder/Decoder
[main][i]Version: 1.0.46-2/generic
[main][i]Built on Feb 13 2024 13:59:59 (T202402131356/Linux/static_amd64)
[main][i]Running on: ubuntu="22.04"
[main][i]Copyright 2012-2024 Flightradar24 AB
[main][i]https://www.flightradar24.com
[main][i]DNS mode: PING
[main][i]Automatic updates are ENABLED
ERROR: rmmod: ERROR: Module dvb_usb_rtl28xxu is not currently loaded
[w]Detected --net argument for dump1090, disabling internal RAW feed!
[w]Detected --net argument for dump1090, disabling internal BS feed!
[I] [httpd]Server started, listening on :::8754
[i]PacketSenderConfiguration::fetch_config(): Yoda configuration for this receiver is disabled
[d]TLSConnection::ctor(): Enable verify_peer in production code!
[main][i]Reader thread started
[main][i]MLAT data feed started
[master][i]Starting processing thread
[mlat][i]Waiting for MLAT configuration
[reader][i]Initializing reader
[reader][i]Connecting to DVBT receiver via (exe:///usr/bin/dump1090 --net --net-http-port 8081 --raw --mlat)
[reader][i]Connected to the receiver, configuring
[reader][i]Configured, processing messages
[reader][i]Timestamp source changed from UNKNOWN to SYSTEM-UNCERTAIN
[time][i]Synchronizing time via NTP
[main][w]Failed to synchronize time, waiting 8 seconds
[time][i]Synchronizing time via NTP
[time][e]Failed to synchronize time
[main][w]Failed to synchronize time, waiting 10 seconds
[time][i]Synchronizing time via NTP
[time][i]Time synchronized correctly, offset -3.724 seconds
[main][i]Feed Network client started
[feed][i]Downloading configuration
[feed][d]Fetching configuration
[reader][i]Timestamp source changed from SYSTEM-UNCERTAIN to SYSTEM-VALIDATED
[E] write_locked - missing monitor file pointer
[feed][i]configuring decoder
[feed][c]Max range AIR: 300.0nm
[feed][c]Max range GND: 80.0nm
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[feed][i]configuration changed
[feed][i]defined 3 servers
[feed][c]Timestamps: optional
[I] Stopping ReceiverACSender threads for feed
[feed][n]connecting
[I] [stats]Stats thread started
[I] Network thread connecting to 185.218.24.22:8099 for feed EDDN456
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[feed][n]connected via UDP (fd 20)
[feed][n]working
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[feed][i]sent 1,0 AC
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer
[E] write_locked - missing monitor file pointer​

I run on ubuntu wsl with my sdr passed trough, because on windows natively wouldn't work.

[figment]

I had the same errors when setting this up for the first time on a raspberry pi recently.

The very first line of your log output is the issue (at least it was for me):
/dev/shm/decoder.txt: Permission denied.

For me it was that the file was owned by root but I was running the software as a different user. I had to change the owner of /dev/shm/decoder.txt to the other user and it fixed the error. I'm not sure if there is anything else you need to do as I'm running fr24 as a systemd service and you seem to be running fr24 directly, but it's at least something to get you started.