Fixed the deseralizing issue #4181

src/Ombi.Api.Radarr/Models/V2/RadarrAddMovie.cs

@@ -28,5 +28,6 @@ namespace Ombi.Api.Radarr.Models
         public string titleSlug { get; set; }
         public int year { get; set; }
         public string minimumAvailability { get; set; }
+        public long sizeOnDisk { get; set; }
     }
 }

src/Ombi.Api.Radarr/RadarrApi.cs

@@ -82,7 +82,8 @@ namespace Ombi.Api.Radarr
                 titleSlug = title + year,
                 monitored = true,
                 year = year,
-                minimumAvailability = minimumAvailability
+                minimumAvailability = minimumAvailability,
+                sizeOnDisk = 0
             };
 
             if (searchNow)

src/Ombi.Api.Radarr/RadarrV3Api.cs

@@ -85,7 +85,8 @@ namespace Ombi.Api.Radarr
                 titleSlug = title + year,
                 monitored = true,
                 year = year,
-                minimumAvailability = minimumAvailability
+                minimumAvailability = minimumAvailability,
+                sizeOnDisk = 0
             };
 
             if (searchNow)

src/Ombi/ClientApp/src/app/settings/radarr/radarr.component.ts

@@ -43,7 +43,7 @@ export class RadarrComponent implements OnInit {
                     addOnly: [x.addOnly],
                     minimumAvailability: [x.minimumAvailability, [Validators.required]],
                     scanForAvailability: [x.scanForAvailability],
-                    v3: [x.v3]
+                    v3: [x.v3 ?? true]
                 });
 
                 if (x.defaultQualityProfile) {