Hello infura, why dont you even provided info about general issues like this in documentation

Questions
1

“No Infura API Key found. Add environment variable WEB3_INFURA_API_KEY to ensure continued API access after March 27th. New keys are available at https://infura.io/register”

I added infura key to system variables, but still Im getting error.

2

Can you provide more information on the code you’re using that generated this issue?

3