User can't log in with their SSH key and I'm getting this error in /var/log/secure

Overview: This article explains how to resolve SSH login issues by updating a user's public key, either through the backend of gateway server or by manually editing the authorized_keys file on the gateway server. 

Make sure that your public key is not corrupted. Try generating a new public key and paste it into the backend.

• Refer to the following article to update the SSH gateway user public key.

Alternatively, you can update the public key by ssh'ing into the gateway server and pasting the public key in /home/user/.ssh/authorized_keys

Related Articles:

Setup public key in the remote server

How to add SSH public key for passwordless authentication in SSH

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