# Internal error generating code for blocks AND problem on iOS
**URL:** https://community.thunkable.com/t/internal-error-generating-code-for-blocks-and-problem-on-ios/1424284
**Category:** Questions about Thunkable X
**Created:** [August 1, 2021, 10:01am UTC](https://community.thunkable.com/t/internal-error-generating-code-for-blocks-and-problem-on-ios/1424284 "2021-08-01T10:01:46Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@team.eps.numeriqueg](https://community.thunkable.com/u/team.eps.numeriqueg)
#### Post date: [August 1, 2021, 10:01am UTC](https://community.thunkable.com/t/internal-error-generating-code-for-blocks-and-problem-on-ios/1424284/1 "2021-08-01T10:01:46Z")
Hello, I have a problem, my application sometimes displays the following message: Internal error generating code for blocks. The problem is that I think this is the reason now that my app no longer works on iOS … It works fine on android but not on iOS …
Could someone help me? Here is my app
[https://x.thunkable.com/copy/e0a5e5514d7edd3f942e38abd3964a5c](https://x.thunkable.com/copy/e0a5e5514d7edd3f942e38abd3964a5c)
Thanks for help
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### Author:  [@team.eps.numeriqueg](https://community.thunkable.com/u/team.eps.numeriqueg)
#### Post date: [August 1, 2021, 11:10am UTC](https://community.thunkable.com/t/internal-error-generating-code-for-blocks-and-problem-on-ios/1424284/2 "2021-08-01T11:10:04Z")
I found out where the problem came from. It looks like it came from a function I created where there was around 30 save on localstorage. iOS therefore didn’t seem to take that much.
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### Author:  [@ioannis](https://community.thunkable.com/u/ioannis)
#### Post date: [November 8, 2024, 1:17pm UTC](https://community.thunkable.com/t/internal-error-generating-code-for-blocks-and-problem-on-ios/1424284/3 "2024-11-08T13:17:41Z")