fix event parameter type

app.py

@@ -28,8 +28,11 @@ def run_on_gpu(input_shape):
 def main():
     description = '''# [PPSurf](https://github.com/cg-tuwien/ppsurf)
     
-    Supported file formats: PLY, STL, OBJ and other mesh files, XYZ as whitespace-separated text file, 
-    NPY and NPZ (key='arr_0'), LAS and LAZ (version 1.0-1.4), COPC and CRS.
+    Supported file formats: 
+    - PLY, STL, OBJ and other mesh files, 
+    - XYZ as whitespace-separated text file, 
+    - NPY and NPZ (key='arr_0'), 
+    - LAS and LAZ (version 1.0-1.4), COPC and CRS.
     Best results for 50k-250k points. 
     
     This method is meant for scans of single and few objects. 
@@ -38,9 +41,9 @@ def main():
     Inference takes about 2 minutes.
     '''
 
-    def convert_to_ply(input_point_cloud_upload: gr.File):
-        print('inputs:', input_point_cloud_upload.value)
-        input_shape = input_point_cloud_upload.value[0]
+    def convert_to_ply(input_point_cloud_upload: str):
+        print('inputs:', input_point_cloud_upload)
+        input_shape = input_point_cloud_upload
         if not input_shape.endswith('.ply'):
             # load file
             from ppsurf.source.occupancy_data_module import OccupancyDataModule