Update app.py

debug stage 1: add print statements

app.py

@@ -22,11 +22,15 @@ async def root():
 async def enhance_img(file: UploadFile = File(...)):
     try:
         data = await file.read()
+        print('File read')
         img = Image.open(io.BytesIO(data)).convert("RGB")
+        print('Passing file into network')
         sr = model.predict(img)
+        print("File output")
         buf = io.BytesIO()
         sr.save(buf, format="PNG")
         buf.seek(0)
+        print('Done')
         return StreamingResponse(buf, media_type="image/png")
 
     except Exception as e: