Habpanel chart widget doesn't refresh

Hi everyone.
My habpanel chart widgets doesn’t refresh since a week. The configuration is the same i think. Yesterday i made a complete new installation and nothing changes. Only if i close habpanel and restart, the charts are on time.
Is it a problem that i use two panel configurations for two tablets to the same time? The panel size of both are different. So i use two different configurations.
And in Firefox on Laptop under “Entwickleroptionen” i can see the message:
Source-Map-Fehler: request failed with status 404 Ressourcen-Adresse: Source-Map-Adresse: aCKolor.min.js.map
I have habpanel Version 2.2 and snapshot 2.3 testet. No change.
Thanks to all for helping,