Facing while loading project

[MRKY 4M]

When i am testing my appinventor source loacally , and i created project , but it not opens , it got freeze after creating projects , 

it is unable to open , I want to know why this error is coming , what are the reason that this error comes , their is no log even 

Help please 

Thanks

[MRKY 4M]

when i debug project i got this message in Developer messase 

INFO] DesignToolbar added project Hello with id 5629499534213120

[INFO] ViewerBox: switching the content in the viewer box

[INFO] ProjectEditor: got onLoad for project 5629499534213120

[INFO] YaProjectEditor got onShow() for project 5629499534213120

[INFO] AssetList: switching projects from 0 to 5629499534213120

[INFO] AssetList: refreshing for project 5629499534213120

[INFO] ProjectEditor: recordLocationSetting(WebViewer1,False)

[INFO] ProjectEditor:recomputeLocationPermission: False

[INFO] Adding form editor for Screen1

[INFO] Created BlocklyPanel for 5629499534213120_Screen1

[INFO] ProjectEditor: recordLocationSetting(WebViewer1,False)

[INFO] ProjectEditor:recomputeLocationPermission: False

[INFO] Adding blocks editor for Screen1

[INFO] ViewerBox: switching the content in the viewer box

[INFO] ViewerBox: switching the content in the viewer box

[INFO] ViewerBox: switching the content in the viewer box