The error message "indexOf of undefined" appears when trying to read a property that does not exist within a new

Help Needed:

The following error is happening: Cannot read property 'indexOf' of undefined at new HttpRequest (http.js:653) at HttpClient.request (http.js:1069) at HttpClient.get (http.js:1157)

This occurs when I use the get() method from HttpClient like in this example:

this.http.get('api/link');

I have never used the indexOf method in my code. What could be causing this issue?

Answer №1

When analyzing the API response, be mindful of how the information is returned. It may come back as an array, so ensure that you are utilizing it in the correct format specified by the request.

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