no matching key exchange method found. their offer: diffie-hellman-group1-sha1,diffie-hellman-group14-sha1 and they have it code example

Example: no matching key exchange method found. Their offer: diffie-hellman-group1-sha1,diffie-hellman-group14-sha1

ssh -oKexAlgorithms=+diffie-hellman-group1-sha1 123.123.123.123