another fix try on app.py

to resolve the image.open error

app.py

@@ -6,9 +6,10 @@ from PIL import Image, ImageChops, ImageEnhance
 def convert_to_ela_image(filename, quality):
     resaved_filename = 'temp.jpg'
 
-    im = Image.open(filename)
-    im1 = im.convert('RGB')
-    im1.save(resaved_filename, 'JPEG', quality=quality)
+    # im = Image.open(filename)
+    # im1 = im.convert('RGB')
+    # im1.save(resaved_filename, 'JPEG', quality=quality)
+    filename.save(resaved_filename, 'JPEG', quality=quality)    
     resaved_im = Image.open(resaved_filename)
     
     ela_im = ImageChops.difference(im, resaved_im)