After the last update of SMT, the clients are unable to get jobs from
The process smt-agent is blocked (the message is "Error: Cannot open
Lock. Process still running?"), and the client receive the 404 error
from smt server (object not found).
In /var/log/apache2/error_log i see the error
Use of uninitialized value in concatenation (.) or string at
/usr/lib/perl5/vendor_perl/5.10.0/SMT/JobQueue.pm line 276