Issue installing mailinabox

i am having issue installing mailinabox when it gets to Upgrading to Nextcloud version 17.0.6, i get an error

FAILED: wget -O /tmp/

–2020-07-05 21:27:01--
Resolving (…, 2a01:4f9:2a:3119::181
Connecting to (||:443… connected.
ERROR: cannot verify’s certificate, issued by ‘CN=Let’s Encrypt Authority X3,O=Let’s Encrypt,C=US’:
Issued certificate has expired.
To connect to insecurely, use `–no-check-certificate’.

please any solution?

Try the setup again - it was probably a misconfiguration on Nextcloud’s side and somehow they presented you an expired certificate. It seems to be fixed here.

Otherwise, please check your VM’s date and hour.

thanks is working now