When i’m trying to update the server from SUDO, i’m receiving next errors. how it can be fixed ?
The following signatures were invalid: KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442
Fetched 1,740 kB in 1s (1,116 kB/s)
Reading package lists… Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://download.owncloud.org/download/repositories/stable/Ubuntu_16.04 Release: The following signatures were invalid: KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442
W: Failed to fetch owncloud.org/download/repositories/stable/Ubuntu_16.04/Release.gpg The following signatures were invalid: KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163442 KEYEXPIRED 1535163644 KEYEXPIRED 1535163442
W: Some index files failed to download. They have been ignored, or old ones used instead.
root@bti-owncloud:/home/gorokrik#