Application Restarting every time

Dash Python
1

Hello,

I am building a multi page application.

I have a side bar to navigate between pages.

When I in a page, whenever I choose a Select , the application restarts again.

It sometimes doesnot happen, and a lot of times the application restarts.

In my developer console, I get these errors

error1
error11889×174 34.8 KB

Error:
key is not a prop. Trying to access it will result in undefined being returned. If you need to access the same value within the child component, you should pass it as a different prop.

error2
error21907×360 64.7 KB

Error:
Warning: Each child in a list should have a unique “key” prop. See https://fb.me/react-warning-keys for more information.

error3
error31915×364 46.7 KB

Error:
Warning: Each child in a list should have a unique “key” prop. See https://fb.me/react-warning-keys for more information.

error4
error41902×166 37.7 KB

Error:
POST http://127.0.0.1:8888/_dash-update-component

error5
Error: server did not respond as it restarts

All of the code is in this repository

I am not sure why these error happen sometimes, and sometimes they do not Or how to resolve the restarting of the application.

Please, any help is appreciated

2

I also get this error sometimes

Can’t perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in the componentWillUnmount method.

error6
error61302×369 61.8 KB

3

These are just warnings not errors and they come from the components themselves, not your code. You can ignore every message that says “warning” and not “error”.