Seems Pure theme repo is not present anymore, on attempt to clone pelican-themes I see error:
fatal: Authentication failed for 'https://github.com/danclaudiupop/pure.git/'
fatal: clone of 'https://github.com/danclaudiupop/pure.git' into submodule path '/home/matrix/pelican-themes/pure' failed
Failed to clone 'pure' a second time, aborting
Seems Pure theme repo is not present anymore, on attempt to clone pelican-themes I see error:
https://github.com/danclaudiupop/pure/tree/9c58a20c1ed86a26c456ac1f3a736838b6409fc1