Cocos creator version: 3.8.1
error message call stack:
TypeError: Cannot read property 'length' of null
at Node._updateSiblingIndex (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:71288:46)
at eval (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:133662:18)
at Map.forEach (<anonymous>)
at _sortSiblings (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:133659:45)
at Director.emit (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:170317:19)
at Director.tick (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:27805:20)
at Game._updateCallback (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:28915:22)
at updateCallback (/Applications/Cocos/Creator/3.8.1/CocosCreator.app/Contents/Resources/resources/3d/engine/bin/.cache/dev/editor/bundled/index.js:11446:20)