Revolution Slider conflict when attempting admin login

Support
1

I downloaded a backup from FlyWheel and imported into Local. Everything went well and I can view the site. When I attempt to access the admin I get these errors. Is this a known issue with Revolution Slider plugin activated? Any workaround?

Fatal error: Uncaught Error: [] operator not supported for strings in /app/public/wp-content/plugins/revslider/includes/framework/base-admin.class.php:69 

Stack trace: 
#0 /app/public/wp-content/plugins/revslider/admin/revslider-admin.class.php(393): RevSliderBaseAdmin::addMetaBox('Revolution Slid...', '', Array, NULL) 
#1 /app/public/wp-content/plugins/revslider/admin/revslider-admin.class.php(65): RevSliderAdmin->addSliderMetaBox() 
#2 /app/public/wp-content/plugins/revslider/admin/revslider-admin.class.php(43): RevSliderAdmin->init() 
#3 /app/public/wp-content/plugins/revslider/revslider.php(150): RevSliderAdmin->__construct('/app/public/wp-...') 
#4 /app/public/wp-settings.php(303): include_once('/app/public/wp-...') 
#5 /app/public/wp-config.php(81): require_once('/app/public/wp-...') 
#6 /app/public/wp-load.php(37): require_once('/app/public/wp-...') 
#7 /app/public/wp-admin/admin.php(31): require_once('/app/public/wp-...') 
#8 /app/public/wp-admin/index.php(10): require_once('/app/public/wp-...') 
#9 {main} thrown in /app/public/wp-content/plugins/revslider/includes/framework/base-admin.class.php on line 69
2

Hi @beezeyeview,

The empty index operator was removed in PHP 7.1. I’d contact Rev Slider about this if your license is up to date.

Otherwise, you can re-import the site using the Custom environment with PHP 7 or older.