유효하지 않은 서명 EXPKEYSIG

내가 멍청한 짓을해서 미안하지만 정말 도움을 주셔서 감사합니다.

업데이트를 확인할 때마다 나타납니다.

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04  Release: The following signatures were invalid: EXPKEYSIG 2F7F0DA5FD5B64B9 home:strycore OBS Project <home:strycore@build.opensuse.org>
W: Failed to fetch http://download.opensuse.org/repositories/home:/strycore/xUbuntu_18.04/Release.gpg  The following signatures were invalid: EXPKEYSIG 2F7F0DA5FD5B64B9 home:strycore OBS Project <home:strycore@build.opensuse.org>

저장소 페이지 를 방문 하여 저장소 서명 키를 다시 추가해야합니다.

wget -nv https://download.opensuse.org/repositories/home:strycore/xUbuntu_18.04/Release.key -O Release.key
sudo apt-key add - < Release.key
sudo apt-get update