Membership 2 Pro blank page after stripe payment

Hi,

Trying to pay membership with Stripe, but after the payment modal closes (as a success), the site loads a blank page. Both live/test mode.

I’ve tried without other plugins. With wp debug it says:

Fatal error: Uncaught Error: Call to undefined function bcadd() in /srv/rikul/site/wp-content/plugins/membership/lib/wpmu-lib/inc/class-thelib-core.php:187 Stack trace: #0 /srv/rikul/site/wp-content/plugins/membership/lib/wpmu-lib/inc/class-thelib-core.php(200): TheLib_Core->convert(‘8eeaaf754d1e6f0…’, ‘0123456789abcde…’, ‘0123456789’:wink: #1 /srv/rikul/site/wp-content/plugins/membership/premium/gateway/stripeplan/class-ms-gateway-stripeplan.php(178): TheLib_Core->convert(‘8eeaaf754d1e6f0…’, ‘0123456789abcde…’, ‘0123456789ABCDE…’:wink: #2 /srv/rikul/site/wp-content/plugins/membership/app/gateway/stripe/class-ms-gateway-stripe-api.php(292): MS_Gateway_Stripeplan::get_the_id(617, ‘plan’:wink: #3 /srv/rikul/site/wp-content/plugins/membership/premium/gateway/stripeplan/class-ms-gateway-stripeplan.php(375): MS_Gateway_Stripe_Api->subscribe(Object(M2_Stripe_Customer), Object(MS_Model_Invoice)) #4 /srv/rikul/site/wp-content/plugins/membership/app/controller/class-ms-controller-gateway.php(642): MS_Gateway_Stripeplan->process_purchas in /srv/rikul/site/wp-content/plugins/membership/lib/wpmu-lib/inc/class-thelib-core.php on line 187