Your PGP keys are expired for custom nginx

2019-10-16 10:08:45,662 (DEBUG) ee : Adding ppa of Nginx
2019-10-16 10:08:45,662 (DEBUG) ee : Running command: gpg --keyserver hkp://keys.gnupg.net --recv-keys 3050AC3CD2AE6F03
2019-10-16 10:08:45,905 (DEBUG) ee : Command Output: ,
Command Error: gpg: key 3050AC3CD2AE6F03: 1 signature not checked due to a missing key
gpg: key 3050AC3CD2AE6F03: "home:rtCamp OBS Project " not changed
gpg: Total number processed: 1
gpg: unchanged: 1

2019-10-16 10:08:45,905 (DEBUG) ee : Running command: gpg -a --export --armor 3050AC3CD2AE6F03 | apt-key add -
2019-10-16 10:08:46,135 (DEBUG) ee : Command Output: OK

# apt-key list | grep "expired:"
Warning: apt-key output should not be parsed (stdout is not a terminal)
pub rsa2048 2015-05-24 [SC] [**expired: 2019-10-14**]