# What is this?
**URL:** https://forum.makecode.com/t/what-is-this/5969
**Category:** Help
**Created:** [February 5, 2021, 4:28pm UTC](https://forum.makecode.com/t/what-is-this/5969 "2021-02-05T16:28:08Z")
**Posts on this page:** 12
**Page:** 1
### Author:  [@fd268](https://forum.makecode.com/u/fd268)
#### Post date: [February 5, 2021, 4:28pm UTC](https://forum.makecode.com/t/what-is-this/5969/1 "2021-02-05T16:28:09Z")
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### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [February 5, 2021, 5:38pm UTC](https://forum.makecode.com/t/what-is-this/5969/2 "2021-02-05T17:38:36Z")
I had this problem too!
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### Author:  [@richard](https://forum.makecode.com/u/richard)
#### Post date: [February 5, 2021, 5:39pm UTC](https://forum.makecode.com/t/what-is-this/5969/3 "2021-02-05T17:39:24Z")
Do you have a line in main.ts that declares transparency16? Deleting the line in main.ts should fix the issue. Also, could you share the project?
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### Author:  [@fd268](https://forum.makecode.com/u/fd268)
#### Post date: [February 5, 2021, 6:09pm UTC](https://forum.makecode.com/t/what-is-this/5969/4 "2021-02-05T18:09:19Z")
It’s not in main.ts,
> **[yy](https://arcade.makecode.com/68788-19751-34579-28524)**
>
> Made with ❤️ in Microsoft MakeCode Arcade.
I think it’s the notification extension that’s breaking because it only happens when I use the notification extension.
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### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [February 5, 2021, 6:25pm UTC](https://forum.makecode.com/t/what-is-this/5969/5 "2021-02-05T18:25:36Z")
Ah yes, this is my fault. 😕
Whenever I import the notification extension, it imports another `tilemap.g.jres` or whatever which declares `transparency16` too, which conflicts with the one already in your project, but since the file is locked, I can’t remove it.
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### Author:  [@richard](https://forum.makecode.com/u/richard)
#### Post date: [February 5, 2021, 6:27pm UTC](https://forum.makecode.com/t/what-is-this/5969/6 "2021-02-05T18:27:14Z")
You can remove it by editing pxt.json and deleting the entries for tilemap.g.jres and tilemap.g.ts. Just be careful that the JSON syntax is correct! Once the entries are removed, you can delete the files in github.
and here’s my standard warning:
# YOU SHOULD NOT EDIT PXT.JSON IF YOU DON’T KNOW WHAT YOU’RE DOING BECAUSE YOU CAN BREAK YOUR PROJECT FOREVER
Make sure you back things up first!
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### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [February 5, 2021, 6:40pm UTC](https://forum.makecode.com/t/what-is-this/5969/7 "2021-02-05T18:40:46Z")
Fixed it! Please try and let me know!
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### Author:  [@fd268](https://forum.makecode.com/u/fd268)
#### Post date: [February 5, 2021, 6:51pm UTC](https://forum.makecode.com/t/what-is-this/5969/8 "2021-02-05T18:51:16Z")
Um it’s still saying that there is a error.
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### Author:  [@UnsignedArduino](https://forum.makecode.com/u/UnsignedArduino)
#### Post date: [February 5, 2021, 6:57pm UTC](https://forum.makecode.com/t/what-is-this/5969/9 "2021-02-05T18:57:48Z")
Ahh, you will need to update it on your end - go to JS, look the the explorer and press the reload button next to the notifications folder.
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### Author:  [@jwunderl](https://forum.makecode.com/u/jwunderl)
#### Post date: [February 5, 2021, 7:27pm UTC](https://forum.makecode.com/t/what-is-this/5969/10 "2021-02-05T19:27:45Z")
This button should pop up / fix it too if you select `Try to fix` 🙂
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### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [February 8, 2021, 1:46am UTC](https://forum.makecode.com/t/what-is-this/5969/11 "2021-02-08T01:46:52Z")
I did this but it still doesn’t work.
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### Author:  [@fd268](https://forum.makecode.com/u/fd268)
#### Post date: [February 8, 2021, 4:34pm UTC](https://forum.makecode.com/t/what-is-this/5969/12 "2021-02-08T16:34:57Z")
I just deleted the code in the notification file tilemap.g.ts and it’s fine