Title: Fatal error: Cannot redeclare google_api_php_client_autoload() Last modified: December 29, 2016 --- # Fatal error: Cannot redeclare google_api_php_client_autoload() * [alxbclrk](https://wordpress.org/support/users/alxbclrk/) * (@alxbclrk) * [9 years, 5 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/) * Hi Simple Calendar team, * I’ve found a plugin conflict with the Birchpress Scheduler plugin that hopefully can be corrected (I’m contacting the other developer as well). When both active I get a crashed site and this fatal error: * Fatal error: Cannot redeclare google_api_php_client_autoload() (previously declared in ###\wp-content\plugins\google-calendar-events\vendor\google\apiclient\src\ Google\autoload.php:18) in ###\wp-content\plugins\birchschedule\lib\vendor\google\ apiclient\autoload.php on line 31 * But plugins work great on my site… just not simultaneously. Is there anything that can be done to fix this issue? I’ve love to use both. * Thank you. Viewing 7 replies - 1 through 7 (of 7 total) * Plugin Contributor [Nick Young](https://wordpress.org/support/users/nickyoung87/) * (@nickyoung87) * [9 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8626499) * I believe this is an issue with the Google API’s being of different versions. I will need to dig a bit further to let you know for sure. * Also, please let me know if you hear anything from their side. * [uncwes](https://wordpress.org/support/users/uncwes/) * (@uncwes) * [9 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8627523) * Just tried installing the calendar plugin and I’m getting a similar message. * Fatal error: Cannot redeclare google_api_php_client_autoload() (previously declared in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/wd-google-analytics/ google/autoload.php:18) in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/ google-calendar-events/vendor/google/apiclient/src/Google/autoload.php on line 18 * Plugin Contributor [Nick Young](https://wordpress.org/support/users/nickyoung87/) * (@nickyoung87) * [9 years, 4 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8693694) * Hi please run through this to isolate what plugin/theme is causing the conflict: * [https://docs.simplecalendar.io/troubleshooting-theme-plugin-widget-conflicts/](https://docs.simplecalendar.io/troubleshooting-theme-plugin-widget-conflicts/) * Let me know what you find and we can work from there. * Thanks! * [andyjwaller](https://wordpress.org/support/users/andyjwaller/) * (@andyjwaller) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8732150) * I just had the same error when I tried installing the Simple Calendar plugin. I found this thread on the Birchpress site: * [https://www.birchpress.com/forums/topic/google-api-php-client-simple-calendar-plugin-composer-autloading-conflict](https://www.birchpress.com/forums/topic/google-api-php-client-simple-calendar-plugin-composer-autloading-conflict) * I’m glad the problem is acknowledged, but I still don’t have a solution. * Plugin Contributor [Nick Young](https://wordpress.org/support/users/nickyoung87/) * (@nickyoung87) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8735689) * Did you contact them as well? What did they tell you? * [sgibson71](https://wordpress.org/support/users/sgibson71/) * (@sgibson71) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8817592) * I can tell you I just got this error when I tried to install the latest download of the plugin Version 3.1.9 . Hope this can be resolved or if there is a fix I’d really like to be able to use this great plugin. Thanks * Plugin Contributor [Nick Young](https://wordpress.org/support/users/nickyoung87/) * (@nickyoung87) * [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8858084) * I believe the issue here is that there are 2 different versions of the Google API being loaded so they conflict with each other. We do have this on our list to look at/test. Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘Fatal error: Cannot redeclare google_api_php_client_autoload()’ is closed to new replies. * ![](https://ps.w.org/google-calendar-events/assets/icon-256x256.png?rev=1263960) * [Simple Calendar - Google Calendar Plugin](https://wordpress.org/plugins/google-calendar-events/) * [Frequently Asked Questions](https://wordpress.org/plugins/google-calendar-events/#faq) * [Support Threads](https://wordpress.org/support/plugin/google-calendar-events/) * [Active Topics](https://wordpress.org/support/plugin/google-calendar-events/active/) * [Unresolved Topics](https://wordpress.org/support/plugin/google-calendar-events/unresolved/) * [Reviews](https://wordpress.org/support/plugin/google-calendar-events/reviews/) ## Tags * [conflict](https://wordpress.org/support/topic-tag/conflict/) * [Google API](https://wordpress.org/support/topic-tag/google-api/) * 7 replies * 5 participants * Last reply from: [Nick Young](https://wordpress.org/support/users/nickyoung87/) * Last activity: [9 years, 3 months ago](https://wordpress.org/support/topic/fatal-error-cannot-redeclare-google_api_php_client_autoload/#post-8858084) * Status: not resolved