Slider revolution stop working

Im getting the error below since a couple of month ago , and now page is not working properly , any ideas ?

ERROR line 71 in file /srv/htdocs/wp-content/plugins/revslider/includes/framework/base-admin.class.php. error message: Uncaught Error: operator not supported for strings in /srv/htdocs/wp-content/plugins/revslider/includes/framework/base-admin.class.php:71

Stack trace:

#0 /srv/htdocs/wp-content/plugins/revslider/admin/revslider-admin.class.php(552): RevSliderBaseAdmin::addMetaBox(‘Revolution Slid…’, ‘’, Array, NULL)

#1 /srv/htdocs/wp-content/plugins/revslider/admin/revslider-admin.class.php(73): RevSliderAdmin->addSliderMetaBox()

#2 /srv/htdocs/wp-content/plugins/revslider/admin/revslider-admin.class.php(44): RevSliderAdmin->init()

#3 /srv/htdocs/wp-content/plugins/revslider/revslider.php(165): RevSliderAdmin->__construct(’/srv/htdocs/wp-…’)

#4 /wordpress/core/5.2.2/wp-settings.php(362): include_once(’/srv/htdocs/wp-…’)

#5 /srv/htdocs/wp-config.php(84): require_once(’/wordpress/core…’)

#6 /wordpress/core/5.2.2/wp-load.php(42): require_once(’/srv/htdocs/wp-…’)

#7 /wordpress/core/5.2.2/wp-admin/admin.php(34): require_once(’/wordpress/core…’)

#8 /wordpress/core/5.2.2/wp-admin/index.php(10): require_once(’/wordpress/core…’)

#9 {main}



You can check this thread there you will find helpful information.

Contact with slider revolution item author @themepunch @ThemePunch-Support-K hope they will help you.


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Hi daro1920,

Thanks for using Slider Revolution. What you’re experiencing isn’t a known issue and could be caused by some conflict with another 3rd party plugin. Kindly go through this conflict test and see if it helps. Also, make sure that you’re using the latest version of the plugins, theme, WordPress, and PHP.

If you need further assistance, contact us over at our support center or by email at and a member of our team can investigate this for you asap!



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This problem appears to be caused by upgrading to PHP 7.1.0. See

To resolve the issue with the Slider Revolution failing to load in Wordpress I had to manually edit the following plugin file:

On lines 141 I changed the line from this:

self::$arrMetaBoxes = $box;

to this:

self::$arrMetaBoxes = array();
self::$arrMetaBoxes = $box;

@ThemePunch-Support-K @themepunch needs to fix this!


Hi @HC_marketing,

Thanks for using Slider Revolution. Kindly contact us via our email at and we’ll check what’s going on over there.


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