Pycharm Can't run remote python interpreter error

I have an aws ec2 instance to which I want to access and work via pycharm but I cannot correctly configure access to the remote terminal.
The steps I do are these:

1. using github and pycharm I clone the project repository and at the start of the program, since there is no configured python interpreter I start the configuration by clicking on the button "configure python interpreter"

2. then select ssh interpreter and enter the ip address of the aws instance and username ubuntu

3) as key I choose a previously saved ppk file

4)continuing with the settings I select the interpreter like the one identified in the path usr/bin/python and as the project directory I select the directory of my project in home/ubuntu/MyProject

this is what i see after setting up the remote interpreter

all connection tests are passed successfully but when I run the code I get this error

Error running 'main': Can't run remote python interpreter: Error connecting to remote host

So how can I solve this problem?