Cannot read properties of undefined (reading 'JsonRpcProvider')

[xiaohaha123]

I run the deploy.js with WSL/Ubuntu using node deploy.js command, and it reports an error:

xiaohaha@DESKTOP-LG42EDE:~/hh-fcc/ethers-simple-storage$ node deploy.js
TypeError: Cannot read properties of undefined (reading 'JsonRpcProvider')

my code is below:
let provider = new ethers.providers.JsonRpcProvider("http://127.0.0.1:8545");
as I change it to:
let provider = new ethers.JsonRpcProvider("http://127.0.0.1:8545");
the error disappear, but the Contract become BaseContract and its information isn't like the teacher's

the teacher's is Contract:

what's wrong with my program?

[alymurtazamemon]

@xiaohaha123 I think it is due to the updated ethers version to 6, it is very latest and I also have not used its features so I would recommend you either to find out from the docs or as I suggest everyone to use the same versions which Patrick uses while learning and later move on to updated versions to make your learning process smooth.

[xiaohaha123]

thank you very much!!!
I change the ethers version to 5.6.2 and it excute correctly!