pixellife виндопроблемы. Она не может создать символьные ссылки. Распаковывайте на линуксе, тогда уж. Причём вы не указали ПОЛНУЮ ошибку. А она гласит так:
! C:\Users\kitsune\Downloads\metastore.build.flarum.standard.tar.xz: Cannot create symbolic link C:\Users\kitsune\Downloads\metastore.build.flarum.standard\metastore.build.flarum.standard\vendor\bin\studio
! You may need to run WinRAR as administrator
A required privilege is not held by the client.
! C:\Users\kitsune\Downloads\metastore.build.flarum.standard.tar.xz: Cannot create symbolic link C:\Users\kitsune\Downloads\metastore.build.flarum.standard\metastore.build.flarum.standard\vendor\bin\doctrine-dbal
! You may need to run WinRAR as administrator
A required privilege is not held by the client.
! C:\Users\kitsune\Downloads\metastore.build.flarum.standard.tar.xz: Cannot create symbolic link C:\Users\kitsune\Downloads\metastore.build.flarum.standard\metastore.build.flarum.standard\vendor\bin\minifycss
! You may need to run WinRAR as administrator
A required privilege is not held by the client.
! C:\Users\kitsune\Downloads\metastore.build.flarum.standard.tar.xz: Cannot create symbolic link C:\Users\kitsune\Downloads\metastore.build.flarum.standard\metastore.build.flarum.standard\vendor\bin\minifyjs
! You may need to run WinRAR as administrator
A required privilege is not held by the client.
! C:\Users\kitsune\Downloads\metastore.build.flarum.standard.tar.xz: Cannot create symbolic link C:\Users\kitsune\Downloads\metastore.build.flarum.standard\metastore.build.flarum.standard\vendor\bin\lessc
! You may need to run WinRAR as administrator
A required privilege is not held by the client.
Где ЯВНО сказано про символьные ссылки. Почему вы об этом умолчали, не знаю.
