Firefox crash while using Statusmap und MySQL

Hello friends and contributors!
I am using Status Map panel in Grafana to show some machines states in real time. As database I am using MySQL.
I would like to show a time range of “last 6 hours”. My query looks like the following:

__timeGroupAlias(creation_date,1s,previous), Workplace AS metric, MachineState FROM fahrtenschreiber WHERE __timeFilter(creation_date) AND ( Area = ‘Bereich_Vorhobel’)
ORDER BY $__timeGroup(creation_date,1s,previous)

This query causes the crash of Firefox, which i can not understand.
Can anyone help??? Thank you in advance.