PMCORE-1349 [19511] Multiple file fields dont work with Action By Email

workflow/engine/src/ProcessMaker/Model/AppDocument.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace ProcessMaker\Model;
+
+use Illuminate\Database\Eloquent\Model;
+
+class AppDocument extends Model
+{
+    protected $table = "APP_DOCUMENT";
+    protected $primaryKey = 'APP_DOC_UID';
+    public $incrementing = false;
+    public $timestamps = false;
+
+}