Load the PMPro Stripe Library Earlier

my_load_pmpro_stripe_library_early.php

/**
 * Load the PMPro Stripe Library Earlier
 * Works with PMPro v2.1+
 * Use this if you are experiencing errors like Stripe/PaymentMethod not found
 * or other errors that might be caused by another Stripe Library loading earlier.
 *
 * This is not meant as a final solution.
 * With this coded enabled, you may notice other Stripe-related plugins breaking.
 * When you find the other plugin that is affecting things, you can see if
 * that plugin is needed or if there is an update.
 * Or you can use more specific code to make sure that that plugin doesn't load
 * their older version of the Stripe API on the PMPro checkout and update billing pages.
 */
function my_load_pmpro_stripe_library_early() {
	if ( defined( 'PMPRO_DIR' ) && function_exists( 'pmpro_is_checkout' ) && pmpro_is_checkout() ) {
		require_once( PMPRO_DIR . "/includes/lib/Stripe/init.php" );
	}
}
add_action( 'init', 'my_load_pmpro_stripe_library_early', 0 );