Hi everyone,
I am new to vbcs and I have my newly created apps with some Business Object(BO).
When i try to add BO in Drawer as Create Form, i can't move on in the process and when i look in console log, that's the result:
[VBDT ERROR loadingPage]: TM: transaction throws an error
{ts: '2023-05-24T19:03:07.765Z', message_type: 'log', session_id: '000001884dcfbaca', error: true, error.kind: 'TypeError: Cannot read properties of null (reading…6f90d669b9cf7635770c8c40c6/vbcs.min.js:15764:1596', …}
t.write @ trace-client.min.js:3
p._emit @ trace-3rdparty.js:16
(anonymous) @ trace-3rdparty.js:16
log @ Logger.js:1
exception @ Logger.js:1
_transactionAborted @ TextContentContext.js:2
(anonymous) @ TextContentContext.js:2
Promise.catch (async)
_executeTransaction @ TextContentContext.js:2
(anonymous) @ TextContentContext.js:2
setTimeout (async)
startTransaction @ TextContentContext.js:2
__joinTransaction @ TextContentContext.js:2
_joinTransaction @ TextContentContext.js:2
startTransaction @ TextContentContext.js:2
u @ UUID.js:7
doTransaction @ UUID.js:7
finish @ TypeTargetResolver.js:2
(anonymous) @ QuickStart.js:2
Promise.then (async)
finish @ QuickStart.js:2
await in finish (async)
finishQuickStart @ QuickStart.html:1
r @ ojcorebundle.js:23824
(anonymous) @ ojcorebundle.js:57569
Logger.js:1 TypeError: Cannot read properties of null (reading 'previousSibling')
at f (IconUtils.js:5:1)
at h (IconUtils.js:5:1)
at Object.insertBefore (IconUtils.js:5:1)
at v (NodeAdjuster.js:2:1)
at w (NodeAdjuster.js:2:1)
at Object.surroundWith (NodeAdjuster.js:2:1)
at Object.perform (StandardLayoutCommon.js:2:1)
at ConfigureAsCreateFormDataModel.surroundWithValidationGroup (TypeTargetResolver.js:2:1)
at async ConfigureAsCreateFormDataModel.finishFormQuickstart (AddCreatePageToCollectionQSDef.json:2:1)
at async TypeTargetResolver.js:2:1
log @ Logger.js:1
exception @ Logger.js:1
_transactionAborted @ TextContentContext.js:2
(anonymous) @ TextContentContext.js:2
Promise.catch (async)
_executeTransaction @ TextContentContext.js:2
(anonymous) @ TextContentContext.js:2
setTimeout (async)
startTransaction @ TextContentContext.js:2
__joinTransaction @ TextContentContext.js:2
_joinTransaction @ TextContentContext.js:2
startTransaction @ TextContentContext.js:2
u @ UUID.js:7
doTransaction @ UUID.js:7
finish @ TypeTargetResolver.js:2
(anonymous) @ QuickStart.js:2
Promise.then (async)
finish @ QuickStart.js:2
await in finish (async)
finishQuickStart @ QuickStart.html:1
r @ ojcorebundle.js:23824
(anonymous) @ ojcorebundle.js:57569
trace-client.min.js:3 [VBDT ERROR VBDT-System]: TypeError: Cannot read properties of null (reading 'previousSibling')
{ts: '2023-05-24T19:03:07.766Z', message_type: 'log', session_id: '000001884dcfbaca', error: true, error.kind: 'unhandledRejection', …}
t.write @ trace-client.min.js:3
p._emit @ trace-3rdparty.js:16
(anonymous) @ trace-3rdparty.js:16
e.onUnhandledRejection @ trace-client.min.js:3
IconUtils.js:5 Uncaught (in promise) TypeError: Cannot read properties of null (reading 'previousSibling')
at f (IconUtils.js:5:1)
at h (IconUtils.js:5:1)
at Object.insertBefore (IconUtils.js:5:1)
at v (NodeAdjuster.js:2:1)
at w (NodeAdjuster.js:2:1)
at Object.surroundWith (NodeAdjuster.js:2:1)
at Object.perform (StandardLayoutCommon.js:2:1)
at ConfigureAsCreateFormDataModel.surroundWithValidationGroup (TypeTargetResolver.js:2:1)
at async ConfigureAsCreateFormDataModel.finishFormQuickstart (AddCreatePageToCollectionQSDef.json:2:1)
at async TypeTargetResolver.js:2:1
The runtime error show this 
Help me please,
Thank you