changeset_post_save_failure

Hello,

I just migrated my db from staging to production on the same host. Everything went well except for the Additional CSS field that was blank in production.

I copied the additional CSS from the staging site to production then saved and got this error message changeset_post_save_failure

I then installed the Simple CSS plugin, added the CSS code and saved it, but the Simple CSS field remained empty.

I have deactivated all plugins, but that didn't solve the problem.

It seems if I try and make any change to code that was migrated to any part of the Customizer I get the same error message when I save.

Any ideas?

Thanks

Keith