{"id":18999433,"date":"2026-08-21T11:46:42","date_gmt":"2026-08-21T11:46:42","guid":{"rendered":"https:\/\/wordpress.org\/support\/topic\/incompatible-with-modern-event-calendar\/"},"modified":"2026-08-21T11:46:42","modified_gmt":"2026-08-21T11:46:42","slug":"incompatible-with-modern-event-calendar","status":"publish","type":"topic","link":"https:\/\/wordpress.org\/support\/topic\/incompatible-with-modern-event-calendar\/","title":{"rendered":"Incompatible with Modern Event Calendar"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Hi,<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We&#8217;re using your plugin and the commercial Modern Event Calendar for a project. Unfortunately, we&#8217;re encountering the following error when displaying events:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>PHP Fatal error: Cannot declare class qrstr, because the name is already in use in \/wp-content\/plugins\/modern-events-calendar\/app\/libraries\/qrcode.php on line 91<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">The reason is that <em>both <\/em>your plugin and Modern Event Calendar contain a PHP class named &#8220;qrstr&#8221; without a prefix or namespace. As a result, it\u2019s unfortunately not possible to use both plugins together.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Could you please fix this in an update? Events are the primary focus of this project, which is why we can&#8217;t disable their plugin but yours to solve this for the moment.<\/p>\n","protected":false},"template":"","class_list":["post-18999433","topic","type-topic","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18999433","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic"}],"about":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/topic\/18999433\/revisions"}],"wp:attachment":[{"href":"https:\/\/wordpress.org\/support\/wp-json\/wp\/v2\/media?parent=18999433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}