Calendar in some browsers not loading

[Rainer Jünger]

Hi all,

I am having a problem with the calendar view:
http://www.csu-landsberg.de/termine/
Please scroll down to the bottom of the page.

In some browsers the calendar it self ist not loading and in some other calendars the dates are not loading, as shown on the screenshot.

We use the latest PRO version.

Thanks, Rainer

[Stephen Harris]

Hi Rainer,

When I view your page I get an authentication challenge. The wp-admin/admin-ajax.php (probably all of the wp-admin directory appears to be password protected. This causes the request to fail (unless you’re logged in). Which might be why the calendar is failing to load one some browsers (i.e. the one’s you’re not logged-in). Unfortunately, without the credentials I couldn’t investigate any further, but it’s very unlikely the calendar itself is having any issues on particular browsers (it has been thoroughly tested ‘in the wild’) – so I suspect it might be the 401 issue.

If you have password protected your wp-admin directory I recommend making an exception for wp-admin/admin-ajax.php, which is widely used as an ajax endpoint for both admin and front-end requests.

[Rainer Jünger]

Hi Stephen,

thank you very much for your answere and your hint.
I just disabled the basic authentication for debugging.
Unfortunately the dates are still not loading.

Do you have any further ideas?

Best regards, Rainer

[Stephen Harris]

Hi Rainer,

I’ve just checked with Chrome and Firefox, and the calendar is loading fine for me. Are there any particular browsers you’re having problems with (I’ll be able to check IE and Safari next week).

[Brian O’Neill]

I’m having the same or similar issue. The calendar just spins “Loading…” when I’m not logged in but once I log in it works. However, my users won’t be logged in so they are out of luck. I will try to make the exception you noted above and see if that solves it.

[Stephen Harris]

Rainer, I’ve since checked the calendar on the following browsers: ie11, Firefox 34 & 43, Safari 7, Chromium 39, Chrome 46 & 48 and it works on all of them. Are you still seeing this problem, and if so, which browser?

Brian, your calendar appears to be rendering correctly. Are you still have this issue too?

[Brian O’Neill]

Hi Stephen,

Per http://www.wpbeginner.com/wp-tutorials/how-to-password-protect-your-wordpress-admin-wp-admin-directory/, I added this code to my .htaccess file:

<Files admin-ajax.php>
Order allow,deny
Allow from all
Satisfy any
</Files>

It is now working and as far as I can tell hasn’t caused any new problems.

[Kim Harding]

I am getting reports from users that the calendar is not loading in Firefox, although it will load in other browsers. It seems to be the same issue as reported above. Has anyone found a solution?

[Stephen Harris]

Hi Kim,

Do you have any URLs I can check? The calendar is supported on Firefox, and I’ve not found any issues in testing.

The issue above wasn’t actually browser related at all: if you have password protected the wp-admin directory you will require authentication for all ajax requests (this is not WordPress authentication). So if you’ve authenticated the browser for the wp-admin directory then subsequent ajax requests will succeed. If you don’t, then you’ll get an error. This can give the impression that the issues is specific to a browser, particularly if you’re using a particular browser as a ‘logged-out user’ who wouldn’t have accessed wp-admin to trigger the authentication challenge.

Password protecting your wp-admin directory is a really good idea, you just need to exclude wp-admin/admin-ajax.php.

[Kim Harding]

Hi Stephen,

This is the URL http://www.edfoc.org.uk/calendar-of-events/ I have had a number of people tell me that it won’t load in Firefox, but will load in other browsers.

[Stephen Harris]

Hi Kim,

Yes, I’m seeing it too. Could you let me know how you’re using the shortcode (what attributes etc) and also would you be able to set the following in your wp-config.php (following the WP_DEBUG line, or otherwise near the top).

 define( 'SCRIPT_DEBUG', true );

That will tell the plug-in to use the non-minified version and the origin of the error should be clearer then.

[Kim Harding]

[eo_fullcalendar month=”6″ year=”2016″ nextDayThreshold=00:00:00]

[Stephen Harris]

Thanks Kim,

This is a bug with the month attribute. You can workaround this as follows:

[eo_fullcalendar year="2016" month="06" nextDayThreshold="00:00:00"]

(note the leading 0 in the month). There’ll be a fix for this shortly.

[Kim Harding]

Great Thanks

[Adnan Akbas]

Hi,

I have the same Problem with Safari. (I have the version 9.0.1)

The only difference is Calendar is showing entries only when I am logged-in.
When logged-off I see empty calendar and it keeps loading….

Calendar works fine with Firefox & Chrome. The problem exists only with Safari.

I get see no error messages in DEBUG mode.

My site is using SSL (https)

Any ideas?

[Author]

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