Apt-get update error

I get the following error, when i run the command ‘sudo apt-get update’.

Ign:1 https://repo.download.nvidia.com/jetson/common r32.4 InRelease
Ign:2 https://repo.download.nvidia.com/jetson/t186 r32.4 InRelease
Err:3 https://repo.download.nvidia.com/jetson/common r32.4 Release
Certificate verification failed: The certificate is NOT trusted. The certifica te chain uses not yet valid certificate. Could not handshake: Error in the cert ificate verification. [IP: 23.211.117.80 443]
Err:4 https://repo.download.nvidia.com/jetson/t186 r32.4 Release
Certificate verification failed: The certificate is NOT trusted. The certifica te chain uses not yet valid certificate. Could not handshake: Error in the cert ificate verification. [IP: 23.211.117.80 443]
Hit:5 http://ports.ubuntu.com/ubuntu-ports bionic InRelease
Get:6 http://ports.ubuntu.com/ubuntu-ports bionic-updates InRelease [88.7 kB]
Get:7 http://ports.ubuntu.com/ubuntu-ports bionic-backports InRelease [74.6 kB]
Get:8 http://ports.ubuntu.com/ubuntu-ports bionic-security InRelease [88.7 kB]
Reading package lists… Done
E: The repository ‘https://repo.download.nvidia.com/jetson/common r32.4 Release’ no longer has a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: The repository ‘https://repo.download.nvidia.com/jetson/t186 r32.4 Release’ no longer has a Release file.
N: Updating from such a repository can’t be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/bionic/InRelease is not valid yet (invalid for another 88d 7h 34min 29s). Updates for this repository will not be applied.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/bionic-updates/InRelease is not valid yet (invalid for another 1093d 12h 5min 39s). Updates for this repository will not be applied.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/bionic-backports/InRelease is not valid yet (invalid for another 1093d 12h 6min 41s). Updates for this repository will not be applied.
E: Release file for http://ports.ubuntu.com/ubuntu-ports/dists/bionic-security/InRelease is not valid yet (invalid for another 1093d 12h 4min 50s). Updates for this repository will not be applied.

I would be thankful if someone can help me with solving that.

hello mk.kang,

it may be server issue, were you able to execute apt commands to display a list of new and upgradable packages.
i.e. $ apt list --upgradable

hello JerryChang
I encountered the same problem. How can i fix it

hello changding.zhu,

may I know what’s your JetPack release version. thanks