Api V2 is returning an error

Hi,
After I installed the 3.3, in the `API v2` section, it showed this error like this.
I don't know where I can solve this. Can anyone help me with it? Thank you in advance.
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Press F12, open the network tab and load the page again. Check the response for the "v3" resource.
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Uploaded the response for v3. Didn't understand what is this error trying to say?
I've deleted your txt file since it contained sensitive information that you shouldn't share.
But I've spotted the problem: you are not using pretty urls which are a requirement. Add the following line at the end of the conf/config.php file: