Git push in aws devoloper in us-east-2

The description of the error you are facing is a bit vague but it looks like you are having issues pushing to a Git repository in AWS CodeCommit. Step by step instructions for setting up an SSH connection to a CodeCommit repository can be found here. Based on the error, in Step3: Configure credentials on Linux, macOS, or Unix, you have likely missed step 8 where the config file is setup.