PHP 8.1 fix.

Signed-off-by: Kevin Provance <[email protected]>

Author: kprovance

redux-core/inc/classes/class-redux-functions-ex.php

@@ -588,9 +588,12 @@ public static function pro_to_ext() {
 			if ( $redux_pro_key && ! get_user_option( 'extendifysdk_redux_key_moved' ) ) {
 				try {
 					$extendify_user_state = get_user_meta( get_current_user_id(), 'extendifysdk_user_data' );
+					if ( false === $extendify_user_state ) {
+						$extendify_user_state = array();
+					}
 
 					if ( ! isset( $extendify_user_state[0] ) ) {
-						$extendify_user_state[0] = '{}';
+						$extendify_user_state[0] = wp_json_encode( array() ); // '{}';
 					}
 
 					$extendify_user_data                    = json_decode( $extendify_user_state[0], true );