# Error when opening notebook files

**URL:** <https://discourse.julialang.org/t/error-when-opening-notebook-files/48038>\
**Category:** New to Julia\
**Created:** [October 9, 2020, 1:52pm UTC](https://discourse.julialang.org/t/error-when-opening-notebook-files/48038 "2020-10-09T13:52:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Carfo](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carfo/32/17527_2.png) [@Carfo](https://discourse.julialang.org/u/Carfo)\
**Post date:** [October 9, 2020, 1:52pm UTC](https://discourse.julialang.org/t/error-when-opening-notebook-files/48038/1 "2020-10-09T13:52:55Z")

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I followed the instructions, tried it on two different computers but each time I open a notebook file I receive the below error (any ideas as to how I can fix this?):

Fetch content failed  
syntaxerror: unexpected token \< in JSON at position 5

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<div class="post-metadata">

**Author:** ![Carfo](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carfo/32/17527_2.png) [@Carfo](https://discourse.julialang.org/u/Carfo)\
**Post date:** [October 9, 2020, 2:01pm UTC](https://discourse.julialang.org/t/error-when-opening-notebook-files/48038/2 "2020-10-09T14:01:49Z")

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Figured out the issue was the notebook files on github. Downloading them from the actual lectures worked, but now I receive an error when trying to run cells:

“Launch kernel failed”  
A Kernel named julia-1.0 does not appear to be available. Try installing the julia 1.0 kernelspec or selecting a different kernel.

Tried using “build IJulia” but that didn’t work.

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<div class="post-metadata">

**Author:** ![Carfo](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/carfo/32/17527_2.png) [@Carfo](https://discourse.julialang.org/u/Carfo)\
**Post date:** [October 9, 2020, 2:10pm UTC](https://discourse.julialang.org/t/error-when-opening-notebook-files/48038/3 "2020-10-09T14:10:24Z")

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Had to click runtime \> then the julia version before clicking run cell. Disregard.