Question Upgrade Pleks Onyx from version 17.5.3 to version 17.8.1

[kinaweb]

Hello,
I cant upgrade the Plesk version.
Here is the message :

apg-get échoue avec le message suivant :
Reading package lists...
Building dependency tree...
Reading state information...
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
plesk-php56-snmp : Depends: libsnmp30 (>= 5.7.2.1+dfsg-1+deb8u2~dfsg) but 5.7.2.1+dfsg-1+deb8u1+b1 is to be installed
plesk-php70-snmp : Depends: libsnmp30 (>= 5.7.2.1+dfsg-1+deb8u2~dfsg) but 5.7.2.1+dfsg-1+deb8u1+b1 is to be installed
plesk-php71-snmp : Depends: libsnmp30 (>= 5.7.2.1+dfsg-1+deb8u2~dfsg) but 5.7.2.1+dfsg-1+deb8u1+b1 is to be installed

Les packages n'ont pas tous été installés.
Contactez l'assistance technique du produit.


I'm not a server specialist. What can I do ?
Thank you

 

[IgorG]

Update failed because it required libsnmp30 version 5.7.2.1+dfsg-1+deb8u2~dfsg
This packages comes from repository "jessie-updates main" which seems disabled on your system, and you have only "jessie-updates contrib non-free" enabled.
To fix set back to default repository "jessie-updates main contrib non-free".
Contact Plesk Support Team if you can't correct your Debian apt repository.