Cronmanager encountered 1 Errors

Dear all,
since a while ago my FreePBX Dashboard shows the following critical error:
> The following commands failed with the listed error
> /var/lib/asterisk/bin/module_admin listonline > /dev/null 2>&1 (1)
When I tried to run that command manually I got the following:
no repos specified, using: [standard,extended,unsupported] from last GUI settings

Module Version Status


accountcodepreserve Not Installed (Available online: 13.0.2)
announcement 13.0.6 Enabled and up to date
arimanager Not Installed (Available online: 13.0.4)
asterisk-cli 13.0.4 Enabled and up to date
asteriskinfo 13.0.7 Enabled and up to date
backup 13.0.26.1 Enabled and up to date
blacklist Not Installed (Available online: 13.0.14.1)
builtin Enabled; Not available online
bulkhandler Not Installed (Available online: 13.0.14.4)
callback Not Installed (Available online: 13.0.5)
callforward 13.0.4.1 Enabled and up to date
callrecording 13.0.11.1 Enabled and up to date
callwaiting Not Installed (Available online: 13.0.4.1)
campon Not Installed (Available online: 13.0.4.1)
cdr 13.0.30.5 Enabled and up to date
cel 13.0.26.2 Enabled and up to date
certman Not Installed (Available online: 13.0.36.4)
cidlookup 13.0.12.1 Enabled and up to date
conferences 13.0.23.1 Enabled and up to date
configedit 13.0.7 Enabled and up to date
contactmanager Not Installed (Available online: 13.0.42.3)
core 13.0.118.18 Enabled and up to date
customappsreg 13.0.5 Enabled and up to date
customcontexts Not Installed (Available online: 13.0.2)
cxpanel Not Installed (Available online: 13.0.3.3)
dahdiconfig Not Installed (Available online: 13.0.33.12)
dashboard 13.0.25 Enabled and up to date
daynight 13.0.13.1 Enabled and up to date
dictate Not Installed (Available online: 13.0.5)
digium_phones Not Installed (Available online: 13.0.5)
digiumaddoninstaller Not Installed (Available online: 2.11.0.14)
directory Not Installed (Available online: 13.0.18)
disa Not Installed (Locally available)
donotdisturb 13.0.3 Enabled and up to date
dundicheck Not Installed (Available online: 2.11.0.3)
endpointman Not Installed (Available online: 13.0.6.7)
extensionsettings Not Installed (Available online: 13.0.4)
fax Not Installed (Available online: 13.0.40)
featurecodeadmin 13.0.6.4 Enabled and up to date
findmefollow 13.0.38.7 Enabled and up to date
firewall Not Installed (Available online: 13.0.44.4)
framework 13.0.190.19 Enabled and up to date
fw_langpacks Not Installed (Available online: 12.0.7)
hotelwakeup Not Installed (Available online: 13.0.16)
iaxsettings 13.0.6.1 Enabled and up to date
infoservices 13.0.1.1 Enabled and up to date
irc Not Installed (Available online: 2.11.0.7)
ivr 13.0.26.1 Enabled and up to date
languages 13.0.6 Enabled and up to date
logfiles 13.0.10.2 Enabled and up to date
manager Not Installed (Available online: 13.0.2.5)
miscapps 13.0.2.4 Enabled and up to date
miscdests 13.0.4 Enabled and up to date
motif 12.0.4 Enabled and up to date
music 13.0.22 Online upgrade available (13.0.22.1)
outroutemsg 13.0.2.1 Enabled and up to date
paging Not Installed (Available online: 13.0.25.3)
parking Not Installed (Available online: 13.0.19.3)
pbdirectory Not Installed (Available online: 2.11.0.5)
phonebook Not Installed (Available online: 13.0.5.5)
phpagiconf Not Installed (Available online: 2.11.0.2)
phpinfo Not Installed (Available online: 13.0.2)
pinsets Not Installed (Available online: 13.0.8)
presencestate Not Installed (Available online: 13.0.7)
printextensions Not Installed (Available online: 13.0.3)
queuemetrics Not Installed (Available online: 2.11.0.3)
queueprio Not Installed (Available online: 13.0.2)
queues 13.0.32.7 Enabled and up to date
recordings 13.0.30.6 Enabled and up to date
restapi Not Installed (Available online: 13.0.21)
restart Not Installed (Available online: 13.0.6)
ringgroups 13.0.22.1 Enabled and up to date
setcid 13.0.5.1 Enabled and up to date
sipsettings 13.0.24.3 Enabled and up to date
sipstation Not Installed (Locally available)
sms Not Installed (Available online: 13.0.11.1)
soundlang 13.0.24.3 Enabled and up to date
speeddial Not Installed (Available online: 2.11.0.4)
superfecta Not Installed (Locally available)
timeconditions 13.0.33.2 Enabled and up to date
tts Not Installed (Available online: 13.0.8)
ttsengines Not Installed (Available online: 13.0.7)
ucp 13.0.42 Enabled and up to date
userman 13.0.75.4 Enabled and up to date
vmblast Not Installed (Available online: 13.0.8)
voicemail 13.0.53.6 Enabled and up to date
weakpasswords Not Installed (Available online: 13.0.2)
webrtc Not Installed (Available online: 13.0.32.3)
xmpp Not Installed (Available online: 13.0.14)

which gives me no further indication on how to address the issue. I am a bit concerned as system refers to the problem as Critical.

Please advise.

Thank you in advance.