Fix endpoints, validate dates.

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'
         ];
     }
 }

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 [

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;
     }