# An irritating error in Thunkable

**URL:** <https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278>\
**Category:** Questions about Thunkable X\
**Created:** [October 2, 2021, 9:35am UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278 "2021-10-02T09:35:16Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![unknownthunker](https://avatars.discourse-cdn.com/v4/letter/u/c57346/32.png) [@unknownthunker](https://community.thunkable.com/u/unknownthunker)\
**Post date:** [October 2, 2021, 9:35am UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/1 "2021-10-02T09:35:16Z")

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When I do any changes to my code then it shows this error -

![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/8/6/86efb8e84739f32dad99b4cdfbbc230adda67171.png)

I can not do any changes when this error is there and it also stopes autosaving in that that’s an big error I think

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**Author:** ![namitnagar](https://avatars.discourse-cdn.com/v4/letter/n/a183cd/32.png) [@namitnagar](https://community.thunkable.com/u/namitnagar)\
**Post date:** [October 2, 2021, 11:45am UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/2 "2021-10-02T11:45:24Z")

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Do you have any variables  
If yes kindly send a photo of them

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**Author:** ![tatiang](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/tatiang/32/55482_2.png) [@tatiang](https://community.thunkable.com/u/tatiang)\
**Post date:** [October 2, 2021, 1:18pm UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/3 "2021-10-02T13:18:42Z")

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We need to know exactly what change you’re making to your blocks when this error appears. Are you dragging a stored variable somewhere? Are you selecting a data source?

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**Author:** ![martint](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/martint/32/96689_2.png) [@martint](https://community.thunkable.com/u/martint)\
**Post date:** [October 2, 2021, 1:41pm UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/4 "2021-10-02T13:41:47Z")

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I have had this before when there is a blip in connection, usually solved with a hard refresh.

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**Author:** ![muneer](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/muneer/32/75210_2.png) [@muneer](https://community.thunkable.com/u/muneer)\
**Post date:** [October 2, 2021, 1:50pm UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/5 "2021-10-02T13:50:02Z")

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This is not **irritating** at all. This is protecting you from using unacceptable code blocks.

The most common situations are:

- When you are trying to connect **two** blocks together that are not compatible such as a `List Viewer` with a simple object block.
- If you have named a variable and used an illegal character in the name such as the apostrophe (example of an illegal variable name : `user's email`).

Check you do not have one of these situations or share your blocks or your project link for others to help you.

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**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\
**Post date:** [November 8, 2024, 1:14pm UTC](https://community.thunkable.com/t/an-irritating-error-in-thunkable/1539278/6 "2024-11-08T13:14:57Z")

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