Erro ao tentar instalar aplicativo anbox

[maxmilian]

Aparece a seguinte mensagem 

eric@eric-desktop:~$ sudo snap install –classic anbox-installer && anbox-installer
[sudo] senha para eric:
error: cannot install ["–classic" "anbox-installer"]: cannot get details for snap "–classic" in channel "stable": got unexpected HTTP status code 500 via GET to "https://search.apps.ubuntu.com/api/v1/snaps/details/%E2%80%93classic?channel=stable&fields=anon_download_url%2Carchitecture%2Cchannel%2Cdownload_sha3_384%2Csummary%2Cdescription%2Cdeltas%2Cbinary_filesize%2Cdownload_url%2Cepoch%2Cicon_url%2Clast_updated%2Cpackage_name%2Cprices%2Cpublisher%2Cratings_average%2Crevision%2Cscreenshot_urls%2Csnap_id%2Csupport_url%2Ccontact%2Ctitle%2Ccontent%2Cversion%2Corigin%2Cdeveloper_id%2Cprivate%2Cconfinement" [OOPS-d477925e75d72feefcd2b4e433e13564]

[maxmilian]

Resolvido

sudo snap install --classic anbox-installer && anbox-installer