diff --git a/retailcrm/src/Components/RequestProxy.php b/retailcrm/src/Components/RequestProxy.php
index 4e68083..fd61c63 100644
--- a/retailcrm/src/Components/RequestProxy.php
+++ b/retailcrm/src/Components/RequestProxy.php
@@ -46,11 +46,23 @@ class RequestProxy
                 "[$method] " . $e->getMessage() . "\n",
                 $this->container->errorLog
             );
+            
+            return null;
         } catch (InvalidJsonException $e) {
             $this->logger->write(
                 "[$method] " . $e->getMessage() . "\n",
                 $this->container->errorLog
             );
+            
+            return null;
+        } catch (InvalidArgumentException $e) {
+            $this->logger->write(
+                "[$method] " . $e->getMessage() . "\n",
+                $this->container->errorLog
+            );
+            
+            return null;
         }
+        
     }
 }