fix(server): Fix compiler error for subscriptions
fix(server): Fix compiler error for subscriptions

* Remove log of undeclared identifier
* Add missing param to log message
JGrothoff/open62541,StalderT/open62541,JGrothoff/open62541,open62541/open62541,StalderT/open62541,jpfr/open62541,open62541/open62541,JGrothoff/open62541,open62541/open62541,jpfr/open62541,jpfr/open62541,StalderT/open62541,StalderT/open62541,jpfr/open62541,JGrothoff/open62541,open62541/open62541