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JavaScript

after adding the .map I get this error: app.jsx:75 Uncaught TypeError: Cannot read property 'map' of undefined

Everything works till I add the .map function and then I got this error:

app.jsx:75 Uncaught TypeError: Cannot read property 'map' of undefined

How should I fix this?

2 Answers

"Cannot read property 'x' of undefined/null" always means there is a problem before that in the code that left the array/object you're using without a value or made a typo in the variable name.

the strange thing is it works as it suppose to before adding that part

actually you were right obviously, thanks a lot:)