• I’m crossposting this to Facebook Events Widget and Facebook Album support areas to report an incompatibility issue.

    Plugins both work by themselves, but they fail quite brutally when activated together.

    Symptoms:
    -at the bottom of rendered pages I get:

    Fatal error: Class ‘Facebook\FacebookSession’ not found in /xxxx/wp-content/plugins/facebook-events-widget/facebook-events-widget.php on line 111

    -pictures are renderd by Facebook Album but in js console I get:

    Uncaught TypeError: $(…).colorbox is not a function

    -the widgets control panel in the admin fails to load any javascript, and therfore can’t drag&drop widgets or open sidebars, and some sidebars are not present

    My analisys is quite shallow, but a search for “FacebookSession” through all the php of the site tells me that there are two copies of the facebook sdk v4. Likely they are two diferent and incompatible versions vs they are the same or incompatible but are loaded in a way that prevents the other to function.

    I don’t think that it is uncommon to use both plugin at once so I suggest both developers to investigate.

    Feel free to ask me for help

    Thank you

    https://www.ads-software.com/plugins/facebook-albums/

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