Uncaught TypeError: Cannot read property 'appendChild' of null (addtohomescreen.js:553)

[iansv]

There is an error on this line: // attach all elements to the DOM this.viewport.appendChild(this.element); this.container.appendChild(this.viewport); Does anybody know how to fix it?

[RonaldPK]

I ran into that too. this.container is supposed to refer to document.body, but when it is being defined (on line 279) the document hasn't finished loading yet so document.body is still null.

I "fixed" it by adding

if (this.container == null) this.container = document.body;

to line 451 (where DOM and document are ready). Ugly, but it works.