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lukasbach / react-complex-tree

Unopinionated Accessible Tree Component with Multi-Select and Drag-And-Drop
https://rct.lukasbach.com
MIT License
944 stars 74 forks source link

Cannot read properties of undefined (reading 'index') #272

Closed yaximi111 closed 1 year ago

yaximi111 commented 1 year ago

image

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lukasbach commented 1 year ago

I'm not exactly sure why that issue comes up, I suppose it means your data provider returns undefined for certain item IDs. Nevertheless, I suppose the additional check doesn't hurt where you proposed it, I added it in the latest update.

yaximi111 commented 1 year ago

sorry The data returned by the backend is nested, and there are two pieces of the same data in it, and I expanded them all and one of them became undefined. Thank you for your reply!

yaximi111 commented 1 year ago

I've solved the problem with it being data