Small code fixes in API code

pub/api/classes/API_devices.php

@@ -4,6 +4,7 @@ namespace api\classes;
 
 use api\classes\API;
 use api\classes\imageProcessor;
+use JetBrains\PhpStorm\NoReturn;
 
 require_once 'API.php';
 
@@ -36,13 +37,14 @@ class API_devices extends API
             $imageProcessor->imageRestrictions = $imageRestrictions;
             $imageProcessor->validateAndProcess();
             $ImageData = $imageProcessor->returnBase64image();
-        } catch (Exception $e) {
+        } catch (\RuntimeException $e) {
             $this->apiOutput(401, ['error' => 'Error: ' . $e->getMessage()]);
         }
 
         return $ImageData;
     }
 
+    #[NoReturn]
     public function createDevice()
     {
 
@@ -108,6 +110,7 @@ class API_devices extends API
         }
     }
 
+    #[NoReturn]
     public function deleteDevice()
     {
         # check if the device exists