Error for datatable bind to DIV inside an window

[bale_lin]

https://snippet.webix.com/4yblvm3a

About code cause an error:

Uncaught TypeError: Cannot read property ‘q’ of null
at l (core.js:42)
at Object.Vt [as ui] (core.js:26)
at form:163
at yi (ready.js:40)
at helpers.js:125

Any suggestion?

[Nastja]

Hello,
Please check
https://snippet.webix.com/a8x5ztxx