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TypeError: Cannot read properties of undefined (reading '0') #8419

@sentry

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@sentry

Sentry Issue: EXERCISM-JS-R

React ErrorBoundary TypeError: Cannot read properties of undefined (reading '0')
  at FileEditorCodeMirror (../app/javascript/components/editor/FileEditorCodeMirror.tsx:31:3)
  at None (div)
  at None (div)
  at SplitPane (../app/javascript/components/common/SplitPane.tsx:12:3)
  at None (div)
...
(4 additional frame(s) were not displayed)

TypeError: Cannot read properties of undefined (reading '0')
  at FileEditorCodeMirror (../app/javascript/components/editor/FileEditorCodeMirror.tsx:46:34)
...
(5 additional frame(s) were not displayed)

This issue was automatically created by Sentry via Exercism JS Slack

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