Catch exceptions

src/Traits/Getter.php

@@ -65,6 +65,11 @@ trait Getter
      */
     final public function __isset(string $property): bool
     {
-        return !empty($this->__get($property));
+        try {
+            $value = $this->__get($property);
+        } catch (\InvalidArgumentException) {
+            $value = null;
+        }
+        return !empty($value);
     }
 }

src/Traits/Setter.php

@@ -68,6 +68,8 @@ trait Setter
      */
     final public function __unset(string $property): void
     {
-        $this->__set($property, null);
+        try {
+            $this->__set($property, null);
+        } catch (\InvalidArgumentException) {}
     }
 }