Fixed some inspection issues.

src/Entity/Parts/PartLot.php

@@ -112,6 +112,7 @@ class PartLot extends DBElement
      * This is the case, if the expiration date is greater the the current date.
      *
      * @return bool|null True, if the part lot is expired. Returns null, if no expiration date was set.
+     * @throws \Exception If an error with the DateTime occurs
      */
     public function isExpired(): ?bool
     {