[ixpmanager] artisan rir:generate-object throws ksort() error

[Leon Meßner]

Hi,

running IXPM v4.9.2 i get the following error when generating any
template in the ${IXPROOT}/resources/views/api/v4/rir/ path:

# ./artisan rir:generate-object autnum
In Generator.php line 281:
ksort() expects parameter 1 to be array, null given

Lines around 281 of ${IXPROOT}/app/Tasks/Rir/Generator.php are:

    280         
    281         ksort( $rsclients[ 'clients' ], SORT_NUMERIC );
    282         
    283         return $rsclients;
    284     }

When commenting line 281, output of './artisan rir:generate-object
autnum' seems reasonable (and sorted by ASN).
Has anyone encountered this error? I can open a github issue, if this is
of help and provide more output. 

Regards,
Leon