Currently testing my react + flask app locally. Im hosting on EC2 but thats for prod. At first, I received an error on my web console about CORS so I temporarily disbaled it using a chrome extension. Now I receive this error:
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Here is my App.js (React):
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Here is my app.py (flask app):
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Everything is correctly installed on my flask app using a venv. Ive got both flask and react app running at the same time. Im using .env. files for production url and dev url.

Also, when I typed in the actual localhost on axios.get() in my app.js, everything worked, I could see the json message from flask route. I have tried playing around with the code a lot from making sure everything was installed on flask, changing url on axios.get().