changed model loading condition

app.py

@@ -20,10 +20,12 @@ def load_model():
     reader = ocr.Reader(['en'],model_storage_directory='.')
     return reader 
 
-reader = load_model() #load model
 
 if image is not None:
 
+    reader = load_model() #load model
+
+
     input_image = Image.open(image) #read image
     st.image(input_image) #display image