Dec 10 07:50:13.784: %CRYPTO-6-IKMP_NOT_ENCRYPTED: IKE packet from 192.168.1.1
was not encrypted and it should've been.
verify the definition of your ACLs that define what has to be encrypted.
Be aware that this can come from a permit ip any any or any line that includes the any keyword.
compare configuation of the two sides for ISAKMP
Hope to help
May I request if you can post your configs for both routers?
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