Hi .
please advise what can be the cause for the attached screenshot of exception .
I’m using :
===== VERSION INFO ====
Client engine version
7.7.6
Server engine version
7.7.6
Theme version
7.7.6
Push server version
2.2.9.vaadin2
Push client version
2.2.13.vaadin5-javascript
(note: does not need to match server version)
Widget setAppWidgetset
Theme valo
Communication methodClient to server: XHR, server to client: -
Heartbeat 300s
VISJS Addon Version 1.0.1.0 .
===== VERSION INFO ====
For widgetsets compilation I’m using gradle vaadin plugin .
The initial diagram is being painted at the loading time , but when switching off for another tab and awitching back , nothing is present in the screen .
Please tell me if I need to provide additional info .
thanks in advance
