diff --git a/app/Http/Controllers/BaseController.php b/app/Http/Controllers/BaseController.php
index 1eee067b0b23..1ec12ef567f0 100644
--- a/app/Http/Controllers/BaseController.php
+++ b/app/Http/Controllers/BaseController.php
@@ -132,52 +132,90 @@ class BaseController extends Controller
 
     protected function refreshResponse($query)
     {
-        $this->buildManager();
+
+//        $this->manager->parseIncludes($includes);
+
+        $this->serializer = request()->input('serializer') ?: EntityTransformer::API_SERIALIZER_ARRAY;
+
+        if ($this->serializer === EntityTransformer::API_SERIALIZER_JSON) {
+            $this->manager->setSerializer(new JsonApiSerializer());
+        } else {
+            $this->manager->setSerializer(new ArraySerializer());
+        }
 
         $transformer = new $this->entity_transformer(Input::get('serializer'));
 
-        $includes = $transformer->getDefaultIncludes();
-        $includes = $this->getRequestIncludes($includes);
-
-        //info(print_r($includes,1));
-
         $updated_at = request()->has('updated_at') ? request()->input('updated_at') : 0;
         $updated_at = date('Y-m-d H:i:s', $updated_at);
 
-        //info($updated_at);
-
         $query->with(
         [
-        'company' => function ($query) use($updated_at){$query->whereNotNull('updated_at');},
-        'company.clients' =>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.tax_rates'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.groups'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.company_gateways'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.clients.contacts'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.products'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.invoices'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.invoices.invitations.contact'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.invoices.invitations'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.invoices.documents'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.payments'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.quotes.invitations.contact'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.quotes.invitations'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.quotes.documents'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.credits.documents'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.credits.invitations.contact'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.credits.invitations'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.payment_terms'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.vendors.contacts'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.expenses'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.tasks'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.projects'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
-        'company.designs'=>function ($query) use($updated_at){$query->where('updated_at', '>=', $updated_at);},
+          'company' => function ($query) use($updated_at){
+            $query->whereNotNull('updated_at');
+          },
+          'company.clients'=>function ($query) use($updated_at){
+              $query->where('clients.updated_at', '>=', $updated_at)->with('contacts');
+          },
+          'company.tax_rates'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.groups'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.company_gateways'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('gateway');
+          },
+          'company.products'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.invoices'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('invitations','documents');
+          },
+          'company.payments'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('paymentables');
+          },
+          'company.quotes'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('invitations','documents');
+          },
+          'company.credits'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('invitations','documents');
+          },
+          'company.payment_terms'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.vendors'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at)->with('contacts');
+          },
+          'company.expenses'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.tasks'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.projects'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
+          'company.designs'=>function ($query) use($updated_at){
+            $query->where('updated_at', '>=', $updated_at);
+          },
         ]
         );
 
-        $data = $this->createCollection($query, $transformer, $this->entity_type);
 
-        return $this->response($data);
+        if (is_a($query, "Illuminate\Database\Eloquent\Builder")) {
+            $limit = Input::get('per_page', 20);
+
+            $paginator = $query->paginate($limit);
+            $query = $paginator->getCollection();
+            $resource = new Collection($query, $transformer, $this->entity_type);
+            $resource->setPaginator(new IlluminatePaginatorAdapter($paginator));
+        } else {
+            $resource = new Collection($query, $transformer, $this->entity_type);
+        }
+
+        return $this->response($this->manager->createData($resource)->toArray());
+
+
     }
 
     protected function listResponse($query)
diff --git a/app/Http/Middleware/QueryLogging.php b/app/Http/Middleware/QueryLogging.php
index 0447f3b35605..97d214d595b0 100644
--- a/app/Http/Middleware/QueryLogging.php
+++ b/app/Http/Middleware/QueryLogging.php
@@ -50,7 +50,7 @@ class QueryLogging
             
                 Log::info($request->method() . ' - ' . $request->url() . ": $count queries - " . $time);
                 
-             // if($count > 100)
+             // if($count > 700)
              //     Log::info($queries);
                  
             }
diff --git a/app/Repositories/BaseRepository.php b/app/Repositories/BaseRepository.php
index eda78fa63fff..2511d8a328f5 100644
--- a/app/Repositories/BaseRepository.php
+++ b/app/Repositories/BaseRepository.php
@@ -220,7 +220,6 @@ class BaseRepository
         $tmp_data = $data;
 
         /* We need to unset some variable as we sometimes unguard the model */
-
         if (isset($tmp_data['invitations'])) {
             unset($tmp_data['invitations']);
         }
diff --git a/app/Services/Invoice/CreateInvitations.php b/app/Services/Invoice/CreateInvitations.php
index a9b56bb74901..f9b3f4a3a28e 100644
--- a/app/Services/Invoice/CreateInvitations.php
+++ b/app/Services/Invoice/CreateInvitations.php
@@ -31,6 +31,7 @@ class CreateInvitations extends AbstractService
             $invitation = InvoiceInvitation::whereCompanyId($this->invoice->company_id)
                                         ->whereClientContactId($contact->id)
                                         ->whereInvoiceId($this->invoice->id)
+                                        ->withTrashed()
                                         ->first();
 
             if (!$invitation && $contact->send_email) {
diff --git a/config/ninja.php b/config/ninja.php
index 11c7d379abba..5b714b0c050e 100644
--- a/config/ninja.php
+++ b/config/ninja.php
@@ -10,7 +10,7 @@ return [
     'app_name' => env('APP_NAME'),
     'app_env' => env('APP_ENV', 'selfhosted'),
     'require_https' => env('REQUIRE_HTTPS', true),
-    'app_url' => env('APP_URL', ''),
+    'app_url' => rtrim(env('APP_URL', ''), '/') . '/',
     'app_domain' => env('APP_DOMAIN', ''),
     'app_version' => '5.0.12',
     'minimum_client_version' => '5.0.12',
diff --git a/resources/views/index/index.blade.php b/resources/views/index/index.blade.php
index 51742aeb3360..e4cd473f4043 100644
--- a/resources/views/index/index.blade.php
+++ b/resources/views/index/index.blade.php
@@ -75,7 +75,7 @@
   <script>
     if ('serviceWorker' in navigator) {
       window.addEventListener('load', function () {
-        navigator.serviceWorker.register('/flutter_service_worker.js?v={{sha1(time())}}');
+        navigator.serviceWorker.register('/flutter_service_worker.js?v={{ md5(public_path('flutter_service_worker.js')) }}');
       });
     }
 
diff --git a/tests/Feature/InvoiceTest.php b/tests/Feature/InvoiceTest.php
index e2c55a461dd0..5b6a4f19c6bc 100644
--- a/tests/Feature/InvoiceTest.php
+++ b/tests/Feature/InvoiceTest.php
@@ -125,6 +125,15 @@ class InvoiceTest extends TestCase
                 'X-API-TOKEN' => $this->token,
             ])->post('/api/v1/invoices/', $invoice)
             ->assertStatus(200);
+
+
+        //test that the same request should produce a validation error due 
+        //to duplicate number being used.
+        $response = $this->withHeaders([
+                'X-API-SECRET' => config('ninja.api_secret'),
+                'X-API-TOKEN' => $this->token,
+            ])->post('/api/v1/invoices/', $invoice)
+            ->assertStatus(302);
     }
 
     public function testDeleteInvoice()