Kindly solve the problem anyone
Get:1 https://grimler.se/termux-packages-24 stable InRelease [16.8 kB]
Get:2 https://grimler.se/game-packages-24 games InRelease [9347 B] Get:3 https://grimler.se/science-packages-24 science InRelease [9360 B] Err:1 https://grimler.se/termux-packages-24 stable InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B
Err:2 https://grimler.se/game-packages-24 games InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B Err:3 https://grimler.se/science-packages-24 science InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B
Reading package lists... Done W: GPG error: https://grimler.se/termux-packages-24 stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B E: The repository 'https://grimler.se/termux-packages-24 stable InRelease' is not signed. N: Metadata integrity can't be verified, repository is disabled now. N: Possible cause: repository is under maintenance or down (wrong sources.list URL?). W: GPG error: https://grimler.se/game-packages-24 games InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B
E: The repository 'https://grimler.se/game-packages-24 games InRelease' is not signed.
N: Metadata integrity can't be verified, repository is disabled now.
N: Possible cause: repository is under maintenance or down (wrong sources.list URL?).
W: GPG error: https://grimler.se/science-packages-24 science InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B0076E490B71616B
E: The repository 'https://grimler.se/science-packages-24 science InRelease' is not signed.
N: Metadata integrity can't be verified, repository is disabled now.
N: Possible cause: repository is under maintenance or down (wrong sources.list URL?).