# Trying to add an unknown view tag

**URL:** <https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419>\
**Category:** Questions about Thunkable X\
**Created:** [February 1, 2020, 1:15pm UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419 "2020-02-01T13:15:41Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bobbyj12](https://avatars.discourse-cdn.com/v4/letter/b/d26b3c/32.png) [@bobbyj12](https://community.thunkable.com/u/bobbyj12)\
**Post date:** [February 1, 2020, 1:15pm UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419/1 "2020-02-01T13:15:41Z")

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Good morning, My app just crashed with this code. The only change I made was a value in the database component. What could cause this?

 ![image](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/e/b/ebfcbcf34feda48283f1f23748c166fef9d42ecc.png)

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**Author:** ![Garry\_Lane](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/garry_lane/32/58057_2.png) [@Garry\_Lane](https://community.thunkable.com/u/Garry_Lane)\
**Post date:** [February 1, 2020, 2:01pm UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419/2 "2020-02-01T14:01:31Z")

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Sounds like you are trying to call an object that does not exist in the database “null object reference” null=nothing. Check that it actually is in the database or you have referenced the right location. This is just a guess though. 🙂 Good luck, happy thunking.

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**Author:** ![bobbyj12](https://avatars.discourse-cdn.com/v4/letter/b/d26b3c/32.png) [@bobbyj12](https://community.thunkable.com/u/bobbyj12)\
**Post date:** [February 2, 2020, 2:40pm UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419/3 "2020-02-02T14:40:43Z")

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@Garry_lane I think you were right. I deleted everything from the DB and it seems fine now, Thanks,

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**Author:** ![Garry\_Lane](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/garry_lane/32/58057_2.png) [@Garry\_Lane](https://community.thunkable.com/u/Garry_Lane)\
**Post date:** [February 2, 2020, 3:21pm UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419/4 "2020-02-02T15:21:03Z")

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No problems at all, happy to help.

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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, 11:41am UTC](https://community.thunkable.com/t/trying-to-add-an-unknown-view-tag/439419/5 "2024-11-08T11:41:21Z")

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