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Sometimes the problem is brought on by a change in the /home/user and /home/user/.ssh permissions. So, after checking the authorization, we will make the following adjustment. basketball stars
Answer:
Sometimes the error is occur when the permissions of the /home/user and /home/user/.ssh changed. so we will check the permission and change it as follows
chmod 755 /home/user
chmod 700 /home/user/.ssh
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