diff --git a/app/Api/V1/Controllers/Autocomplete/BudgetController.php b/app/Api/V1/Controllers/Autocomplete/BudgetController.php
index ed09d195c4..97fa37418a 100644
--- a/app/Api/V1/Controllers/Autocomplete/BudgetController.php
+++ b/app/Api/V1/Controllers/Autocomplete/BudgetController.php
@@ -73,6 +73,6 @@ class BudgetController extends Controller
             }
         );
 
-        return response()->api($filtered);
+        return response()->api($filtered->toArray());
     }
 }
diff --git a/app/Api/V1/Controllers/Autocomplete/CategoryController.php b/app/Api/V1/Controllers/Autocomplete/CategoryController.php
index 6c0e281236..39085c1f06 100644
--- a/app/Api/V1/Controllers/Autocomplete/CategoryController.php
+++ b/app/Api/V1/Controllers/Autocomplete/CategoryController.php
@@ -73,6 +73,6 @@ class CategoryController extends Controller
             }
         );
 
-        return response()->api($filtered);
+        return response()->api($filtered->toArray());
     }
 }
diff --git a/app/Api/V1/Controllers/Controller.php b/app/Api/V1/Controllers/Controller.php
index a6bbeec865..d232533b27 100644
--- a/app/Api/V1/Controllers/Controller.php
+++ b/app/Api/V1/Controllers/Controller.php
@@ -157,7 +157,15 @@ abstract class Controller extends BaseController
                 $value = null;
             }
             if (null !== $value) {
-                $bag->set($integer, (int) $value);
+                $value = (int) $value;
+                if ($value < 1) {
+                    $value = 1;
+                }
+                if ($value > 2 ** 16) {
+                    $value = 2 ** 16;
+                }
+
+                $bag->set($integer, $value);
             }
             if (null === $value
                 && 'limit' === $integer // @phpstan-ignore-line
diff --git a/app/Api/V1/Requests/Autocomplete/AutocompleteRequest.php b/app/Api/V1/Requests/Autocomplete/AutocompleteRequest.php
index be28d487e7..f37aba9f8d 100644
--- a/app/Api/V1/Requests/Autocomplete/AutocompleteRequest.php
+++ b/app/Api/V1/Requests/Autocomplete/AutocompleteRequest.php
@@ -58,6 +58,7 @@ class AutocompleteRequest extends FormRequest
     public function rules(): array
     {
         return [
+            'date' => 'date|after:1900-01-01|before:2099-12-31'
         ];
     }
 }
diff --git a/app/Api/V1/Requests/Data/DateRequest.php b/app/Api/V1/Requests/Data/DateRequest.php
index 209332f776..b7acb62a1a 100644
--- a/app/Api/V1/Requests/Data/DateRequest.php
+++ b/app/Api/V1/Requests/Data/DateRequest.php
@@ -25,6 +25,7 @@ declare(strict_types=1);
 namespace FireflyIII\Api\V1\Requests\Data;
 
 use FireflyIII\Exceptions\FireflyException;
+use FireflyIII\Exceptions\ValidationException;
 use FireflyIII\Support\Request\ChecksLogin;
 use FireflyIII\Support\Request\ConvertsDataTypes;
 use Illuminate\Foundation\Http\FormRequest;
@@ -49,7 +50,7 @@ class DateRequest extends FormRequest
         $start->startOfDay();
         $end->endOfDay();
         if ($start->diffInYears($end, true) > 5) {
-            throw new FireflyException('Date range out of range.');
+            throw new ValidationException('Date range out of range.');
         }
 
         return [
diff --git a/app/Api/V1/Requests/System/CronRequest.php b/app/Api/V1/Requests/System/CronRequest.php
index 9b76e11239..f88e770acb 100644
--- a/app/Api/V1/Requests/System/CronRequest.php
+++ b/app/Api/V1/Requests/System/CronRequest.php
@@ -57,6 +57,10 @@ class CronRequest extends FormRequest
         if ($this->has('date')) {
             $data['date'] = $this->getCarbonDate('date');
         }
+        // catch NULL.
+        if(null === $data['date']) {
+            $data['date'] = today(config('app.timezone'));
+        }
 
         return $data;
     }
diff --git a/app/Exceptions/Handler.php b/app/Exceptions/Handler.php
index 9e5b7f03c1..af70410cbc 100644
--- a/app/Exceptions/Handler.php
+++ b/app/Exceptions/Handler.php
@@ -133,6 +133,13 @@ class Handler extends ExceptionHandler
 
             return response()->json(['message' => $e->getMessage(), 'exception' => 'BadHttpHeaderException'], $e->statusCode);
         }
+        if($e instanceof ValidationException && $expectsJson) {
+            $errorCode = 422;
+            return response()->json(
+                ['message' => sprintf('Validation exception: %s', $e->getMessage()), 'errors' => ['date' => 'Date is invalid']],
+                $errorCode
+            );
+        }
 
         if ($expectsJson) {
             $errorCode = 500;
diff --git a/app/Jobs/CreateRecurringTransactions.php b/app/Jobs/CreateRecurringTransactions.php
index bf392a3462..207ba625af 100644
--- a/app/Jobs/CreateRecurringTransactions.php
+++ b/app/Jobs/CreateRecurringTransactions.php
@@ -419,7 +419,9 @@ class CreateRecurringTransactions implements ShouldQueue
         /** @var RecurrenceTransaction $transaction */
         foreach ($transactions as $index => $transaction) {
             $single   = [
-                'type'                  => null === $transaction->transactionType->type ? strtolower($recurrence->transactionType->type) : strtolower($transaction->transactionType->type),
+                'type'                  => null === $transaction?->transactionType?->type ?
+                    strtolower($recurrence->transactionType->type) :
+                    strtolower($transaction->transactionType->type),
                 'date'                  => $date,
                 'user'                  => $recurrence->user_id,
                 'currency_id'           => $transaction->transaction_currency_id,