diff --git a/laravel_app/app/Livewire/Projects/ProjectManager.php b/laravel_app/app/Livewire/Projects/ProjectManager.php
index ffeaf76..12e0ed8 100644
--- a/laravel_app/app/Livewire/Projects/ProjectManager.php
+++ b/laravel_app/app/Livewire/Projects/ProjectManager.php
@@ -214,7 +214,7 @@ private function validateForm()
             'name'            => $this->formData['name'],
             'pivot_file' => $this->pivotFiles[0] ?? null,
             'span_file' => $this->spanFiles[0] ?? null,
-            'harvest_data_file' => $this->harvestDataFiles[0] ?? null,
+            'harvest_file' => $this->harvestDataFiles[0] ?? null,
             'boundingBoxes'   => $this->formData['boundingBoxes'],
         ], [
             'name'                                   => [
@@ -223,9 +223,17 @@ private function validateForm()
                 'string',
                 'max:255'
             ],
-            'pivot_file' => ['sometimes'],
-            'span_file' => ['sometimes'],
-            'harvestDataFile' => ['sometimes',new HarvestFile],
+            'pivot_file.extension' => ['sometimes',function ($attribute, $value, $fail) {
+                if($value != 'json'){
+                    $fail('Not a json file');
+                }
+            }],
+            'span_file' => ['sometimes',function ($attribute, $value, $fail) {
+                if($value != 'json'){
+                    $fail('Not a json file');
+                }
+            }],
+            'harvest_file' => ['sometimes',new HarvestFile],
             'boundingBoxes'                          => ['required', 'array', 'min:1'],
             'boundingBoxes.*.name'                   => ['required', 'string', 'max:255'],
             'boundingBoxes.*.top_left_latitude'      => ['required', 'string'],
diff --git a/laravel_app/app/Rules/HarvestFile.php b/laravel_app/app/Rules/HarvestFile.php
index 7b35310..d2ace6b 100644
--- a/laravel_app/app/Rules/HarvestFile.php
+++ b/laravel_app/app/Rules/HarvestFile.php
@@ -14,6 +14,7 @@ class HarvestFile implements ValidationRule
      */
     public function validate(string $attribute, mixed $value, Closure $fail): void
     {
-       //
+        $extensions = [''];
+
     }
 }
diff --git a/laravel_app/resources/views/components/project-manager-properties-modal.blade.php b/laravel_app/resources/views/components/project-manager-properties-modal.blade.php
index bfa536b..0b31524 100644
--- a/laravel_app/resources/views/components/project-manager-properties-modal.blade.php
+++ b/laravel_app/resources/views/components/project-manager-properties-modal.blade.php
@@ -60,9 +60,9 @@
                     <livewire:dropzone
                         wire:model="harvestDataFiles"
                         :rules="['extensions:xls,xlsx,ods','mimes:xls,xlsx,ods','required']"
-                        :key="'harvestDataFiles'"
+                        :key="'harvest_file'"
                     />
-                    @error('harvestDataFiles')
+                    @error('harvest_file')
                     {{ $message }}
                     @enderror
                 </div>