![Canvas] TypeError: null is not an object (evaluating 'thumbCanvas[i]. getContext("2d").drawImage') · Issue #53942 · elastic/kibana · GitHub Canvas] TypeError: null is not an object (evaluating 'thumbCanvas[i]. getContext("2d").drawImage') · Issue #53942 · elastic/kibana · GitHub](https://user-images.githubusercontent.com/6256687/71732377-15040f80-2e15-11ea-8e74-e7a90b9b5979.png)
Canvas] TypeError: null is not an object (evaluating 'thumbCanvas[i]. getContext("2d").drawImage') · Issue #53942 · elastic/kibana · GitHub
![javascript - Why document.createElement('canvas').getContext('2d'). hasOwnProperty('font') returns false? - Stack Overflow javascript - Why document.createElement('canvas').getContext('2d'). hasOwnProperty('font') returns false? - Stack Overflow](https://i.stack.imgur.com/LTmgl.png)
javascript - Why document.createElement('canvas').getContext('2d'). hasOwnProperty('font') returns false? - Stack Overflow
Subsequent calls to `canvas.getContext('2d')` results in exponential growth of width and height · Issue #20 · jondavidjohn/hidpi-canvas-polyfill · GitHub
![canvas.getContext('webgl', {}) return null in webview of electron · Issue #53 · greggman/twgl.js · GitHub canvas.getContext('webgl', {}) return null in webview of electron · Issue #53 · greggman/twgl.js · GitHub](https://user-images.githubusercontent.com/2347813/29805268-55f47be0-8cbb-11e7-87b0-85e0fd321eed.png)