Hello Dek Ery,
I tried already to import dummy-data, but I’ve got an error page: (would be glad to read this in german)
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at [email protected] to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.