Visual composer paid plugin installtion

hi
i altered some code in composer.json
{
“type”: “vcs”,
“url” : “https://johan_ospina@bitbucket.org/johan_ospina/v_comp.git
}

In require filed i added
"johan_ospina/vc.git":"*"

**composer update**
Running composer as root/super user is highly discouraged as packages, plugins and scripts cannot always be trusted
Loading composer repositories with package information
[Composer\Repository\InvalidRepositoryException]
No valid composer.json was found in any branch or tag of https://johan_ospina@bitbucket.org/johan_ospina/v_comp.git,
could not load a package from it.

update [–prefer-source] [–prefer-dist] [–dry-run] [–dev] [–no-dev] [–lock] [–no-plugins] [–no-custom-installers] [–no-autoloader] [–no-scripts] [–no-progress] [–with-dependencies] [-v|vv|vvv|–verbose] [-o|–optimize-autoloader] [-a|–classmap-authoritative] [–ignore-platform-reqs] [–prefer-stable] [–prefer-lowest] [-i|–interactive] [–root-reqs] [–] []…

after getting this error i found these links