inorman

I tried adding the lines @smolgiant suggested, but I still get the same error.

Thanks @chrome-orange for the solution.

I deactivated the Sendgrid plugin, and edited the ~/lib/class-sendgrid-settings.php file with the built-in WordPress Plugin Editor with the code from your post (I replaced both line 52 and the show_contextual_help() function code as you outlined), updated the file and reactivated the plugin and it all seems to work now without the error.

@codepeople Thanks for your quick support. That worked perfectly to prevent the issue. Why is it necessary that I need to use this HTML code and what do I need to know to avoid this issue in the future? When is it necessary to use this code in the future?

I can confirm that the code fix that Jrgailey posted above works to fix the problem!
Thanks Jrgailey

Okay so commenting out the FlexSlider is not a good idea as it will mess with your mobile navigation menu so don’t do what I said above.

I managed to eliminate this error by just commenting out the entire flexslider section in …themes/flato/js/scripts.js

Not sure if flexslider is essential to some sort of theme functionality but my site seems to be cool without it.

I replaced this:

/*  FlexSlider
/* ------------------------------------ */
	var firstImage = jQuery('.flexslider').find('img').filter(':first'),
		checkforloaded = setInterval(function() {
			var image = firstImage.get(0);
			if (image.complete || image.readyState == 'complete' || image.readyState == 4) {
				clearInterval(checkforloaded);
				jQuery('.flexslider').flexslider({
					animation: "slide",
					useCSS: false, // Fix iPad flickering issue
					slideshow: false,
					directionNav: true,
					controlNav: true,
					pauseOnHover: true,
					slideshowSpeed: 7000,
					animationSpeed: 400,
					smoothHeight: true,
					touch: false
				});
			}
		}, 20);

	$('select').dropkick();
});

with this:

/*  FlexSlider
/* ------------------------------------
	var firstImage = jQuery('.flexslider').find('img').filter(':first'),
		checkforloaded = setInterval(function() {
			var image = firstImage.get(0);
			if (image.complete || image.readyState == 'complete' || image.readyState == 4) {
				clearInterval(checkforloaded);
				jQuery('.flexslider').flexslider({
					animation: "slide",
					useCSS: false, // Fix iPad flickering issue
					slideshow: false,
					directionNav: true,
					controlNav: true,
					pauseOnHover: true,
					slideshowSpeed: 7000,
					animationSpeed: 400,
					smoothHeight: true,
					touch: false
				});
			}
		}, 20);

	$('select').dropkick();
});
*/

I’m getting the same error on the Flato theme.

Uncaught TypeError: Cannot read property 'complete' of undefined (repeated 999999 times)

/*  FlexSlider
/* ------------------------------------ */
	var firstImage = jQuery('.flexslider').find('img').filter(':first'),
		checkforloaded = setInterval(function() {
			var image = firstImage.get(0);
			if (image.complete || image.readyState == 'complete' || image.readyState == 4) {
				clearInterval(checkforloaded);
				jQuery('.flexslider').flexslider({
					animation: "slide",
					useCSS: false, // Fix iPad flickering issue
					slideshow: false,
					directionNav: true,
					controlNav: true,
					pauseOnHover: true,
					slideshowSpeed: 7000,
					animationSpeed: 400,
					smoothHeight: true,
					touch: false
				});
			}
		}, 20);

	$('select').dropkick();
});

It’s in an endless loop that continuously counts up repetitively when using Right Click>Inspect Element in Chrome Browser.