Uncaught TypeError: Cannot read property 'getTreeRelationship' of null

[erik2000]

I ran into an error with my TreeGrid. I'm guessing it might be a problem with my DataSource. Any clues to how I might fix the error, further debug the error?

More error message:

Uncaught TypeError: Cannot read property 'getTreeRelationship' of null
at _3.isc_ResultTree_getTreeRelationship [as getTreeRelationship] (ISC_DataBinding.js:1770)
at _3.isc_ResultTree_init [as init] (ISC_DataBinding.js:1747)
at _3.isc_Class_completeCreation [as completeCreation] (ISC_Core.js:354)
at _3.isc_c_Class_create (ISC_Core.js:237)
at _3.isc_Canvas_createResultTree [as createResultTree] (ISC_DataBinding.js:2049)
at _3.isc_TreeGrid_createDataModel [as createDataModel] (ISC_DataBinding.js:2118)
at _3.isc_Canvas_filterWithCriteria [as filterWithCriteria] (ISC_Core.js:4467)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:298)
at _3.isc_c_Class_Super [as Super] (ISC_Core.js:290)
at _3.isc_ListGrid_filterWithCriteria [as filterWithCriteria] (ISC_DataBinding.js:2116)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:298)
at _3.isc_c_Class_Super [as Super] (ISC_Core.js:290)
at _3.isc_TreeGrid_filterWithCriteria [as filterWithCriteria] (ISC_DataBinding.js:2120)
at _3.isc_Canvas__filter [as $wo] (ISC_Core.js:4466)
at _3.isc_c_Class_invokeSuper [as invokeSuper] (ISC_Core.js:298)
at _3.isc_c_Class_Super [as Super] (ISC_Core.js:290)
at _3.isc_ListGrid__filter [as $wo] (ISC_Grids.js:2306)
at _3.isc_Canvas_fetchData [as fetchData] (ISC_Core.js:4428)

[Isomorphic]

That's not much to go one. See How to Get Help with Problelms. Can you modify one of our Showcase samples to reproduce that error, or provide the code creating your TreeGrid?