[Plugin: All-in-One Event Calendar] Can't add event to google calendar

We are currently looking into this as a bug

I am having the same issue. I’m not able to subscribe or subscribe with google calendar. antiwarcommittee.org

Antiwar, I was able to export to google calendar from you site just fine – can you provide more details on what you’re experiencing?

edgarcia78 – there were some changes in 1.2.2, however please provide an example link so we can see further what you were experiencing if it still is happening

Antiwar – I spoke too soon, I’m able to see your issue.
When exporting the ICS file, a warning is output due to another plugin:

Warning: Cannot modify header information – headers already sent by (output started at /home/antiwar1/public_html/wordpress/wp-content/plugins/addthis/addthis_social_widget.php:1385) in /home/antiwar1/public_html/wordpress/wp-content/plugins/all-in-one-event-calendar/app/controller/class-ai1ec-exporter-controller.php on line 91

https://antiwarcommittee.org/?plugin=all-in-one-event-calendar&controller=ai1ec_exporter_controller&action=export_events

Because of this, the ICS is not output in a valid form

having the same issue on https://centraloregontrailcourse.com/community-event-page/

Smayernik – I was able to export your calendar just fine? Please provide more details

I had to deactivated the AddThis Social Bookmarking plugin to get the google subscription to work. see https://www.ads-software.com/support/topic/plugin-all-in-one-event-calendar-error-the-address-that-you-provided-did-not-contain-a-calendar-in-a-valid-ical?replies=3#post-2532402

I’m still having issues downloading events to google calendar. I’m assuming I have an app that’s causing the issue. What’s the best way to figure out the culprit?

Here is a link of an event if someone is willing to help me troubleshoot:

https://www.momsclubofhuntington.dreamhosters.com/archives/ai1ec_event/imax-wizard-of-oz?instance_id=7481

Same issue at https://www.csillamvilag.com/ai1ec_event/csillam-tetovalas-tanfolyam-1/?instance_id=17

Same problem here:

https://www.chicletenapoltrona.com/calendario_lancamentos/

I managed to add one time, but don’t know how, cause I really didn’t do anything different, and I can’t find the source of the problem: either other plugin or maybe a php misconfiguration

EDIT: If i go to the link provided by the plugin and download the file, I can actually import it too Google, but can’t do it automatically by clicking the link on the plugin page/widget.

bpedrasani… you comment is interesting. I will have to try that trick. I don’t know what’s causing this issue. Some have said that the plugin AddThis Social Bookmarking is causing this issue, but I do not have this plugin installed.

Yeah, I’m not using that plugin too… Also, I have disabled all other plugins, no luck

try adding this line to the top of the class-ai1ec-importer-controller.php code: <?php ob_start(); ?>
It solves my problem. Mor info here