ubuntu 18.04 java11 TASK [role_jdk : Install open jdk] reinstall error

[zengxc-1996]

TASK [role_jdk : Install open jdk] ********************************************************************************************************************************************
fatal: [47.242.247.111]: FAILED! => {"changed": false, "msg": "Failed to update apt cache: W:Updating from such a repository can't be done securely, and is therefore disabled by default., W:See apt-secure(8) manpage for repository creation and user configuration details., W:GPG error: http://repo.mysql.com/apt/ubuntu bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8C718D3B5072E1F5, E:The repository 'http://repo.mysql.com/apt/ubuntu bionic InRelease' is not signed."}