Perl error on Raspberry pi bullseye 64-bit

[racedowling]

I get this log error each time rpimonitor runs:
Use of uninitialized value in vec at /usr/share/perl5/HTTP/Daemon.pm line 111.
sysread() on closed filehandle GEN1405 at /usr/share/perl5/HTTP/Daemon.pm line 344.

I have reinstalled rpi 2.13 and all the perl modules. Rpimonitor is working. I don't know if this is an rpimonitor or a perl issue.
Any clues would be appreciated.

[mushu999]

Sorry for the thread necro. You didn't state what version of Perl you have installed but starting with version 5.32 any string argument to vec() containing a codepoint over 0xFF is not going to work. That use case was deprecated beginning in Perl 5.28...that being said, I have not tried to upgrade from Buster to Bullseye so no way to test this and see what the problem is.

[mushu999]

Also, see this issue which shows it works in Bullseye: #385

[Vyacheslav-S]

I partially solved this problem by changing rpimonitord.service. Everything is recorded in a log file:

[Unit]
Description=RPi-Monitor daemon
Before=multi-user.target
After=remote-fs.target
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
Restart=on-failure
KillMode=mixed
Nice=19
ExecStart=/usr/bin/rpimonitord
ExecStop=/bin/kill $MAINPID
StandardOutput=append:/var/log/rpimonitor.log
StandardError=append:/var/log/rpimonitor.log

[Install]
WantedBy=multi-user.target

Or without writing errors to disk:

[Unit]
Description=RPi-Monitor daemon
Before=multi-user.target
After=remote-fs.target
After=network-online.target
Wants=network-online.target

[Service]
Type=simple
Restart=on-failure
KillMode=mixed
Nice=19
ExecStart=/usr/bin/rpimonitord
ExecStop=/bin/kill $MAINPID
StandardOutput=append:/var/log/rpimonitor.log
StandardError=append:/dev/null

[Install]
WantedBy=multi-user.target