Fixed isbn lookup provider

main.py

@@ -8,15 +8,18 @@ app = FastAPI()
 async def root():
     return {"message": "Hello World"}
 
+
 @app.post('/checkin/{isbn}')
 async def checkin(isbn):
     return{"Checked in": isbn}
 
+
 @app.get('/checkout/{isbn}')
 async  def checkout(isbn):
     return{"Checked Out": isbn}
 
+
 @app.put('/lookup/{isbn}')
 async  def lookup(isbn):
-    info = meta(isbn, service='Default')
+    info = meta(str(isbn), service='wiki')
     return{"Title": info['Title']}