# What does this error mean?

**URL:** <https://forum.makecode.com/t/what-does-this-error-mean/5299>\
**Category:** Help\
**Created:** [January 1, 2021, 6:58pm UTC](https://forum.makecode.com/t/what-does-this-error-mean/5299 "2021-01-01T18:58:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![GameGod](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/gamegod/32/2756_2.png) [@GameGod](https://forum.makecode.com/u/GameGod)\
**Post date:** [January 1, 2021, 6:58pm UTC](https://forum.makecode.com/t/what-does-this-error-mean/5299/1 "2021-01-01T18:58:17Z")

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> **[otherworldly](https://arcade.makecode.com/33090-64938-10241-18767)**
>
> Made with ❤️ in Microsoft MakeCode Arcade.

There is an error in this project, how do I fix it?

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**Author:** ![DahbixLP](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/dahbixlp/32/4760_2.png) [@DahbixLP](https://forum.makecode.com/u/DahbixLP)\
**Post date:** [January 1, 2021, 9:36pm UTC](https://forum.makecode.com/t/what-does-this-error-mean/5299/2 "2021-01-01T21:36:11Z")

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Hi! I solved it! It is the number stuff! just put it in a join block and it works!  
 ![image](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/2/26e36497e09503432b2c7ed4f1d350d9e893d246.png)  
You are welcome!

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<div class="post-metadata">

**Author:** ![GameGod](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/gamegod/32/2756_2.png) [@GameGod](https://forum.makecode.com/u/GameGod)\
**Post date:** [January 2, 2021, 12:59am UTC](https://forum.makecode.com/t/what-does-this-error-mean/5299/3 "2021-01-02T00:59:40Z")

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Thanks! I had to convert it back into a number, though.

 ![image](https://us1.discourse-cdn.com/flex020/uploads/makecode/original/2X/1/1deeb783ea0173a7ccc40a8d92398ab6f64b16cb.png)

I wonder why the error showed up.

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<div class="post-metadata">

**Author:** ![UnsignedArduino](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/unsignedarduino/32/592_2.png) [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)\
**Post date:** [January 2, 2021, 1:32am UTC](https://forum.makecode.com/t/what-does-this-error-mean/5299/4 "2021-01-02T01:32:57Z")

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`join` will append all the objects together. In the process, it turns them all into strings, like `1` would turn into `"1"` while `"GameGod"` would stay the same. Then it returns a **string**.

`parse to number` takes a string and turns it into a **number** , example `"35465"` would turn into `35465`.

Notice that a string and a number are different. TypeScript takes this _very_ seriously.