On the setting of routing in flask

according to my requirements, I need to query the classified data according to the classified id, but then I want to paginate my classified data, so I define the route:

@home.route("/list/<int:id>/<int:page>/")

then my access route:

http://127.0.0.1:5000/list/1/1/

error:
werkzeug.routing.BuildError: Could not build url for endpoint "home.list" with values [" page"]. Did you forget to specify values ["id"]?
but the strange thing is that if I visit:

http://127.0.0.1:5000/list/2/1/

can be accessed successfully. I wonder what went wrong. In addition, the routing format of my url_for is given:

{{ url_for("home.list",id=v.id,page=1) }}
Nov.23,2021
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