Use unique indices for List item keys. I.e., use package like https://www.npmjs.com/package/uuid to generate unique indices or useInstanceId to generate them. Note that if you use useInstanceId generated Id’s will be unique, but you will get odd or even numbers because of the way React renders components (which does not matter, unless you want to reference those Id’s in your code for whatever reason, what you typically don’t do)
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