Doesn't work anymore after upgrade to ES 6.8.3

[aponb]

After upgrading the ES Cluster to ES 6.8.3, the elasticsearch-head extension (Version 0.1.5) doesn't work anymore when status of cluster is yellow. The browserconsole shows the following error:

Uncaught TypeError: Cannot read property 'size_in_bytes' of undefined at Class._indexHeader_template (app.js:3288) at Array.map () at Class._main_template (app.js:3337) at Class.init (app.js:3070) at Class.prototype.(anonymous function) [as init] (chrome-extension://ffmkiejjmecolpfloofpjologoblkegm/elasticsearch-head/app.js:281:64) at new Class (app.js:265) at Class._drawNodesView (app.js:3623) at Class.draw_handler (app.js:3618) at app.js:351 at Array.forEach ()