Dashboard names not appear

Dashboard names not appear

Dashboard names not appear Instead it appear lik this format:
 
@(dashboard.name.nwoverview)
@(dashboard.name.top10)
 
also when I open (New Dashboard) Widgets appear in the same format 
 
@(widget.typename.alarms)
@(widget.name.allalarm)
@(widget.name.devicealarm)
 
How can I fix this and make the names (like Alarm and Events, All Alarma, Devices with Alarms, Down Interfaces ..etc) appears?
 
I tried uninstall then reinstall without success.
 
Thank You in advance

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