TypeError: Cannot read properties of undefined (reading 'toLowerCase')

Hi All!

I am getting this error “TypeError: Cannot read properties of undefined (reading ‘toLowerCase’)” after running this request. See image below for reference:

It’s most likely not the toLowerCase() function that is the issue, but the previous variable that is probably undefined (or maybe not a string - it’s not a Boolean is it?).

Try getting the iteration data into its own variable first, and console logging it.

Then convert it to lower case on a separate line.

Once you have it working, then you can combine the two commands.

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Thank you for your response :grinning: It’s working already.