After modifying a for..in loop in an asynchronous call, I am receiving an error that says "nextDatasets.map is not a function" and I can't seem to resolve it.

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The error "nextDatasets.map is not a function" usually occurs when you try to use the map function on a variable that is not an array. Therefore, it is possible that the nextDatasets variable is not an array, but rather a different data type (e.g. object, string, etc.).

To resolve this error, you could start by checking if nextDatasets is an array before attempting to use the map function. For example:

if (Array.isArray(nextDatasets)) { nextDatasets.map((item) => { // Your code goes here }); }

If nextDatasets is not an array, you may need to modify your asynchronous call to return an array instead of a different data type. Alternatively, you could also consider using a different method to iterate over the data, depending on the data structure and your requirements.