blockify mutes spotify completely

[Freggels]

I installed blockify on debian and when i start blockify, while spotify is playing i get:

2018-08-14 01:12:42 ERROR    dbus     Failed to get DBus property: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

2018-08-14 01:12:42 ERROR    dbus     Failed to get DBus property: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

2018-08-14 01:12:42 ERROR    dbus     Failed to get DBus property: org.freedesktop.DBus.Error.UnknownMethod: Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist

2018-08-14 01:12:42 ERROR    dbus     Cannot fetch spotify url: 'NoneType' object is not subscriptable

$ blockify --version
blockify 3.6.3

here's my log: https://gist.github.com/SHGuy1/b6c789c272923c0c455523045197efd6

I used blockify before and it works fine on my other desktop (Arch).

[synackd]

I can extend that this exact situation happens on my Artix (systemd-less Arch) installation, but not on my Arch installation.

[alexandre1985]

Open spotify, install pavucontrol, open it, go to first tab (I believe in English is Reproduction or Play) select "Spotify" and click on Unmute button. Maybe with alsamixer you can also unmute it.

[MarkoShiva]

why this issue is not closed yet?