Unable to edit content on certain pages

Hi,

using PixGridder and everything was fine before.

Lately running into issues, where a few sites are not editable anymore. And on one site the WordPress gallery I used in a content block is not even being displayed on the grid view anymore.

Here is some JS errors I got from the console:

load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280 Uncaught TypeError: Cannot set property ‘innerHTML’ of undefined(anonymous function) @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280(anonymous function) @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280m.extend.each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2m.fn.m.each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2(anonymous function) @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280(anonymous function) @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280j.each.j.forEach @ underscore.min.js?ver=1.6.0:5_.extend.getEditors @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280_.extend.getNodes @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280_.extend.setContent @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280_.extend.setLoader @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280_.extend.render @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280(anonymous function) @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280j.each.j.forEach @ underscore.min.js?ver=1.6.0:5b.mce.views.render @ load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,wp-ajax-response,jquery…:280(anonymous function) @ wp-tinymce.php?c=1&ver=4109-20150505:56i @ wp-tinymce.php?c=1&ver=4109-20150505:8r.fire @ wp-tinymce.php?c=1&ver=4109-20150505:10N.setContent @ wp-tinymce.php?c=1&ver=4109-20150505:10setVisualContent @ gridder.js?ver=4.2.2:1(anonymous function) @ gridder.js?ver=4.2.2:1m.event.dispatch @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3m.event.add.r.handle @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3m.event.trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3e.event.trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:8(anonymous function) @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3m.extend.each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2m.fn.m.each @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:2m.fn.extend.trigger @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:3m.each.m.fn.(anonymous function) @ load-scripts.php?c=1&load[]=jquery-core,jquery-migrate,utils,jquery-ui-core,jquery-ui-widget,jquery…:4(anonymous function) @ gridder.js?ver=4.2.2:1

https://www.ads-software.com/plugins/pixgridder/