Update app.py

app.py

@@ -24,7 +24,7 @@ def tif_view(filepath):
     print('tif'+ fext)
     if fext in ['.tiff', '.tif']:
         print('happens?')
-        img = tiff.imread(filepath[-1])
+        img = tiff.imread(filepath)
         if img.ndim==2:
             img = np.tile(img[:,:,np.newxis], [1,1,3])
         elif img.ndim==3: