I have installed Parity on Ubuntu successfully, but unable to install its UI. The following command:
sudo snap install parity-ui
is not working and ending up with an error:
user@ant-a7-surinder:~$ sudo snap install parity-ui [sudo] password for user: error: cannot perform the following tasks: - Fetch and check assertions for snap "parity-ui" (10) (Get https://api.snapcraft.io/api/v1/snaps/assertions/snap-revision/suvnLkTtQB2e2zZlvi9tBKGBLoISrVIOmJNelKAcVdTuwaPXV0VzizWZZnU6ED45?max-format=0: dial tcp xx.xx.xx.xx:443: getsockopt: connection refused)
any help would be appreciated.