I'm using the GAS OAuth2 Library and on Safari (both OSX and web) when I try to call any doGet(e) with createHtmlOutput I get a broken G Drive page that looks like the below image.
function doGet(e){
return HtmlService.createHtmlOutput("<b>Hello world!</b>")
}
The weird thing is, I am sometimes able to get it to work, and other times I am not - this morning though, it is consistently returning the broken GDrive page which I believe is equivalent to html error code 500. Does anyone have experience resolving this? Thanks.