Error 500 failed to start session

I went to check for updates and cannot log in. i get this error

Error 500 failed to start session.

i can telnet into root, any ideas?

yes, chrome, edge, different PC, same result

i get this error: Error 500 failed to start session.

then the error disappears and i am still at the login screen.. does not look like a loop to me and the /dev/sde1 folder is only at 4%.

tried clearing the cache for the browser, tried another browser, PC. still the same...

i beleive it is and one are full, largest is /dev/md0 at 18%:

root@mediavault2:/# df

Filesystem    1K-blocks                  Used                Available         Use%         Mounted on

udev               972904                    0                      972904            0%             /dev

tmpfs              200308                    13272              187036            7%             /run

/dev/sde1       242970012               7062852         223492184     4%            /

tmpfs              1001524                   0                      1001524           0%           /dev/shm

tmpfs              5120                         0                      5120                 0%            /run/lock

tmpfs              1001524                   0                      1001524           0%            /tmp

/dev/md0       11627129648           1977797548    9649315716    18%           /srv/dev-disk-by-uuid-853b5d8d-d16e-426d-9253-3248901613f2

done but no change unfortunately.

the weird thing is there is no real description of the fault, just this

500 - Internal Server Error Failed to start session.

i also used OMV-firstaid to check the configuration status file, checks OK but if i check the RRD database it says there are timestamps in the future. could this be the cause?

that last result prompted me to check something, i can write a file to the array but find that the time stamp is an hour back, before the daylight savings channge. so i try to set the timezone using omv-firstaid but get this error:

Updating time zone. Please wait ...
{'response': None, 'error': {'code': 0, 'message': 'Unknown error', 'trace': 'OM                                V\\Config\\DatabaseException: Unknown error in /usr/share/php/openmediavault/con                                fig/databasebackend.inc:461\nStack trace:\n#0 /usr/share/php/openmediavault/conf                                ig/databasebackend.inc(243): OMV\\Config\\DatabaseBackend->commit()\n#1 /usr/sha                                re/php/openmediavault/config/database.inc(269): OMV\\Config\\DatabaseBackend->re                                place()\n#2 /usr/share/openmediavault/engined/rpc/system.inc(367): OMV\\Config\\                                Database->set()\n#3 [internal function]: Engined\\Rpc\\System->setTimeSettings()                                \n#4 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_                                array()\n#5 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\\Rpc\\ServiceAbst                                ract->callMethod()\n#6 /usr/sbin/omv-engined(546): OMV\\Rpc\\Rpc::call()\n#7 {ma                                in}', 'http_status_code': 500}}
ERROR: Unknown error

this is all strange, using the omv-firstaid tool i try to set the time zone and get an error.

when i try to check the rrd database i get the message about timestamp in the future but when i try to delete it i get an error about read-only system file.

then i tried apt-get install rrdtool --reinstall as in the post you sent me and that also gives me a read-only error.

am i doing something wrong?

i also went to look at the hw clock and system clock. they seem set properly but the hardware clock is UTC. could that be an issue? if i try to change it i get the warning about system read only file.

in the end i used commands to set time and timezone and then rebooted. i then noticed it did not boot so i connected a monitor to see that it was stuck in a shell saying to run fsck manually. i did so and it is now running normally after repearing some system files. go figure.