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Essential modules are missing, downloading cannot start.

Posted: Wed Sep 23, 2020 10:48 pm
by TheLid
Hi

So something went wrong my SABnzbdplus, the web interface just stopped working some time ago and I just left it for a while until a new version of SABnzbdplus appeared in App Central.

I installed this and I can now get onto the web interface and set it up but now I can't download anything. I seem to be getting 5 errors.

ERROR 4 minutes ago Essential modules are missing, downloading cannot start.
ERROR 4 minutes ago unrar binary... NOT found
ERROR 4 minutes ago par2 binary... NOT found!
ERROR 4 minutes ago SABYenc module... NOT found! Expecting v4.0.0 - https://sabnzbd.org/sabyenc
ERROR 4 minutes ago [N/A] The command in build_command is undefined

Any ideas please?

I do know how to SSH onto the NAS if needed but I know next to nothing about Linus so please be easy on me:-)

Thanks

Re: Essential modules are missing, downloading cannot start.

Posted: Thu Sep 24, 2020 6:00 pm
by adrenalinenz
I got rid of the error for unrar and par2 by restarting sabnzbd.

/usr/local/AppCentral/sabnzbdplus/CONTROL/start-stop.sh stop
/usr/local/AppCentral/sabnzbdplus/CONTROL/start-stop.sh start

I still get the error for SABYenc module, hopefully the developer can help out soon.

Re: Essential modules are missing, downloading cannot start.

Posted: Thu Sep 24, 2020 8:46 pm
by TheLid
Thanks

I assume you did that via SSH?

I have disabled the app in AppCentral and reenabled it. I also restarted the app via the web interface.

I assume that this would achieve the same result?

Re: Essential modules are missing, downloading cannot start.

Posted: Fri Sep 25, 2020 1:53 am
by TheLid
I did that via SSH and those 2 errors have now gone. Thanks.

So I'm in the same situation as you now.

Essential modules are missing, downloading cannot start.
SABYenc module... NOT found! Expecting v4.0.0 - https://sabnzbd.org/sabyenc

Re: Essential modules are missing, downloading cannot start.

Posted: Fri Sep 25, 2020 2:05 am
by TheLid
I followed the instructions here

https://sabnzbd.org/wiki/installation/sabyenc.html

to try to upgrade sabyenc to version 4.0.0 but I got the message that the latest version is 3.3.6

So how do we get version 4.0.0?

Re: Essential modules are missing, downloading cannot start.

Posted: Fri Sep 25, 2020 5:49 am
by adrenalinenz
This worked for me
python -m pip install --force-reinstall --ignore-installed --no-binary :all: sabyenc3

But I still have the same problem....

Re: Essential modules are missing, downloading cannot start.

Posted: Wed Sep 30, 2020 10:56 pm
by TheLid
There has been another update and it's working again now.

Thank you :-)

Re: Essential modules are missing, downloading cannot start.

Posted: Mon Feb 07, 2022 4:40 am
by JeremyCreekit
This error is occurring for me too as of the last couple of weeks:

Code: Select all

ERROR 2022-02-01 20:38 Essential modules are missing, downloading cannot start.
ERROR 2022-02-01 20:38 SABYenc module... NOT found! Expecting v4.0.0 - https://sabnzbd.org/sabyenc
When I try to install SABYenc with the following code, I get an error. I think the problem is that I am not referring to the correct Python installation. Any pointers on how to get SABYenc installed? Thanks!

Code: Select all

pip install sabyenc

Re: Essential modules are missing, downloading cannot start.

Posted: Wed Feb 09, 2022 1:33 am
by agiovia
I'm having the exact same problem, but I'm not as familiar with how to install these modules. Everything has been working fine for me up until a few days ago. Is there a way to point me in the right direction as a new user on Asustor?

Re: Essential modules are missing, downloading cannot start.

Posted: Wed Feb 09, 2022 9:34 pm
by earthwalkerx
I have the same issue after install. of 4.0.3.RQ81 on AS6102T.
What can I do?