"bla bla" want to use the "Local Items" keychain, but password isn't accepted.

I've been getting these incessant messages about the cloud, calendar agent, com.apple.internetaccounts, and others that want access to my "Local Items' keychain. But it won't accept the password I always use. I never changed my password until I've been battling this issue. I can't gain access to make the messages disapear because my password doesn't seem right. What can I do?