Hi Gerard,
What’s happened is an SSH key on your Mac has changed.
(EDCSA host key for 192.168.1.40 has changed…)
To fix it:
Delete line 2 in the /Users/gerard/.ssh/known_hosts file on your Mac.
(the 2 at the end of the line Offending ECDSA key in /Users/gerard/.ssh/known_hosts file:2
tells us which line in the file is causing the error)
You can edit the file manually, or you can issue the command:
ssh-keygen -R 192.168.1.40
which will do it for you.
The next time you use SSH to connect to your emonPi, you should see something like:
The authenticity of host ‘192.168.1.40’ can’t be established.
RSA key fingerprint is 06:ea:f1:f8:db:75:5c:0c:af:15:d7:99:2d:ef:08:2a.
Are you sure you want to continue connecting (yes/no)?
(the fingerprint you’ll see will be different from the one shown)
At that point, type yes and hit Enter.
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