# Undefined is not an object (evaluating 'b64.length')

**URL:** <https://forum.dfinity.org/t/undefined-is-not-an-object-evaluating-b64-length/6200>\
**Category:** Developers\
**Created:** [July 29, 2021, 11:39pm UTC](https://forum.dfinity.org/t/undefined-is-not-an-object-evaluating-b64-length/6200 "2021-07-29T23:39:54Z")\
**Posts on this page:** 1\
**Showing post:** 13

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**Author:** ![ehsan6sha](https://sea1.discourse-cdn.com/flex023/user_avatar/forum.dfinity.org/ehsan6sha/32/2460_2.png) [@ehsan6sha](https://forum.dfinity.org/u/ehsan6sha)\
**Post date:** [July 30, 2021, 7:44pm UTC](https://forum.dfinity.org/t/undefined-is-not-an-object-evaluating-b64-length/6200/13 "2021-07-30T19:44:54Z")

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Oops, I missed one comment in here  
[Agent.query in react native not fetching properly - Developers - Internet Computer Developer Forum (dfinity.org)](https://forum.dfinity.org/t/agent-query-in-react-native-not-fetching-properly/5990/5)

Now we are down to WebAssembly issues

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_[View the full topic](https://forum.dfinity.org/t/undefined-is-not-an-object-evaluating-b64-length/6200)._