[Backend] Correctif MerchantConfig

ShopBundle/Model/MerchantConfig.php

@@ -65,7 +65,7 @@ abstract class MerchantConfig extends AbstractEntity
                 return $this->value;
         }
 
-        public function setValue(string $value): self
+        public function setValue($value): self
         {
                 $this->value = $value;