App crashed while just writing the code

[dzek69]

💥 Crash Report

What were you trying to accomplish when the crash occurred?

I was just writing the code. No option was clicked, triggered by shortcut or anything.

Link to sandbox: (optional)

https://codesandbox.io/s/practical-margulis-jffmg

Crash Details

Environment

Browser	Version	Operating System	CodeSandbox Version
chrome	80.0.3987	Windows 10	PROD-1581626805-0394eb371

Route:
https://codesandbox.io/s/practical-margulis-jffmg

Error Message

TypeError: Cannot read property 'title' of undefined
TypeError: Cannot read property 'title' of undefined
  at https://codesandbox.io/static/js/app.eaca164e3.js?_sw-precache=75914d13745b9b3f1744cc1107f611af:536:1103120
  at da (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1695375)
  at $a (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1703618)
  at Ga (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1703437)
  at Ss (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1744246)
  at Sl (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1726418)
  at xl (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1726343)
  at gl (https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1723663)
  at https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1681659
  at https://codesandbox.io/static/js/common.dc6c0e494.chunk.js?_sw-precache=8f131a608cacea2e14962254b925a669:1:1757109

  in Unknown
  in DropTarget(Component)
  in div
  in Mc
  in div
  in t
  in elements__Opener
  in div
  in Unknown
  in DropTarget(Component)
  in Xc
  in div
  in div
  in Unknown
  in div
  in div
  in t
  in elements__Container
  in Unknown
  in WithTheme(Component)
  in div
  in t
  in div
  in t
  in div
  in div
  in t
  in styled.div
  in div
  in t
  in elements__Container
  in t
  in Unknown
  in gh
  in t
  in t
  in div
  in t
  in elements__Content
  in t
  in withRouter(t)
  in div
  in t
  in elements__Container
  in Unknown
  in withRouter()
  in t
  in Unknown
  in t
  in l
  in t