Getting ValidationError using play playlist slashCommand

[fffonceca]

Hi!

Just starting to use this code. I had some issues with play playlist. In play.js there is this line of code

embed
    .setDescription(`**${result.tracks.length} songs from [${playlist.title}](${playlist.url})** have been added to the Queue`)
    .setThumbnail(playlist.thumbnail)

The error occurs when .setThumbnail receives playlist.thumbnail. The whole error log is below:

    return Result.err(new CombinedError(errors));
                      ^

CombinedError: Received one or more errors
    at UnionValidator.handle (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:1088:23)
    at UnionValidator.parse (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:201:88)
    at EmbedBuilder.setThumbnail (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@discordjs\builders\dist\index.js:257:23)
    at Object.run (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\slash\play.js:67:18)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async handleCommand (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\index.js:70:13) {
  errors: [
    ValidationError: Expected undefined or null
        at NullishValidator.handle (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:748:79)
        at NullishValidator.run (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:187:23)
        at UnionValidator.handle (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:1083:32)
        at UnionValidator.parse (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:201:88)
        at EmbedBuilder.setThumbnail (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@discordjs\builders\dist\index.js:257:23)
        at Object.run (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\slash\play.js:67:18)
        at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async handleCommand (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\index.js:70:13) {
      validator: 's.nullish',
      given: Thumbnail {
        id: null,
        width: 336,
        height: 188,
        url: 'https://i.ytimg.com/vi/Yd8kUoB72xU/hqdefault.jpg?sqp=-oaymwEXCNACELwBSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLDqzu6hKMS8ScZnwypHbxwv6WF2Aw'
      }
    },
    ValidationError: Expected a string primitive
        at StringValidator.handle (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:1705:70)
        at StringValidator.run (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:187:23)
        at UnionValidator.parse (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\node_modules\@sapphire\shapeshift\dist\index.js:201:88)
        at Object.run (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\slash\play.js:67:18)
        at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
        at async handleCommand (C:\Users\focax\Documents\Repos\Practica\Proyecto_Fokabot\index.js:70:13) {
      validator: 's.string',
      given: Thumbnail {
        id: null,
        width: 336,
        height: 188,
        url: 'https://i.ytimg.com/vi/Yd8kUoB72xU/hqdefault.jpg?sqp=-oaymwEXCNACELwBSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLDqzu6hKMS8ScZnwypHbxwv6WF2Aw'
      }
    }
  ]
}

I avoided this issue by just deleting that line, but i need a solution of the setThumbnail part. What gives??