Last.FM API in JavaScript - Error Code 5 appearing for some tracks?

Question

Last.FM API in JavaScript - Error Code 5 appearing for some tracks?

80 Views Asked by NAGZ At 19 March 2023 at 21:51

I am trying to implement Last.FM API using a JavaScript wrapper made by 'leemm', and it seems to function properly, with it returning information through testing. But when I try to use the 'track.getInfo()' method, it starts to throw

error: {
    code: '5',
    message: "Invalid format - This service doesn't exist in that format"
  },
  text: undefined
}

For songs such as 'Survival of The Fittest' by 'Mobb Deep'. But it returns information properly for other songs such as 'HUMBLE.' by 'Kendrick Lamar'.

This is my function:

async function lastFMTest(){
  const data = await lastfm.track.getInfo({
    artist: 'Kendrick Lamar',
    track: 'HUMBLE.',
    username: 'NAG_Z',
    autocorrect: '1'
  });
  console.log(data.track.name, data.track.userplaycount, data.track.toptags.tag[0].name);
}

I noticed that getInfo() method returns information for a good amount of tracks before crashing on one particular track. I checked the unofficial documentation and it says:

Last.fm Error Code 5: Invalid Response Format

A format parameter is necessary in addition to the documented parameters, this may either have a value of XML or JSON (case insensitive). Requesting data in another format will emit this error. Some methods do support more than these 2 formats, the methods that do have their formats listed in this documentation.

So I tried inserting a format parameter specifying 'json' which results in the same issue, 'XML' breaks the method though I do wish my data returned in JSON format so I don't really think XML is the way to go.

This is most likely due to my lack of understanding of the API or possibly JavaScript as I am still a novice, if anyone could help me I would greatly appreciate it!