SAM local invoke got docker image error

i want to build and debug SAM applicaiton in vs code. However, everytime I run "sam local invoke", I got the below error. Any idea?

Invoking app.lambdaHandler (nodejs14.x) Local image was not found. Removing rapid images for repo public.ecr.aws/sam/emulation-nodejs14.x Building image...... Failed to build Docker Image NoneType: None Error: Error building docker image: Get "https://public.ecr.aws/v2/": proxyconnect tcp: dial tcp 192.168.65.7:3128: connect: connection refused