Can not edit my dashboard anymore

Hi,
I made some dashboards in Petaho 5.0.1.
The dashboars are still working so I can view them.
But when I try do Edit the Dashboards I can't see any content.
In browser debug modus I see the error:
when I try to switch between layout panel, component panel and datasource panel.

You can see a screenshot here: http://www.asterisk-kompakt.de/_myfi...3_16h16_04.png

How can I fix this.
Thanks for help.