Error

Command git submodule update --init --force --recursive phpmyadmin failed: Submodule 'phpmyadmin' (https://github.com/phpmyadmin/phpmyadmin.git) registered for path 'phpmyadmin' Cloning into '/home/docs/checkouts/readthedocs.org/user_builds/phpmyadmin-chinese-china/checkouts/latest/phpmyadmin'... fatal: unable to access 'https://github.com/phpmyadmin/phpmyadmin.git/': The requested URL returned error: 504 fatal: clone of 'https://github.com/phpmyadmin/phpmyadmin.git' into submodule path '/home/docs/checkouts/readthedocs.org/user_builds/phpmyadmin-chinese-china/checkouts/latest/phpmyadmin' failed Failed to clone 'phpmyadmin'. Retry scheduled Cloning into '/home/docs/checkouts/readthedocs.org/user_builds/phpmyadmin-chinese-china/checkouts/latest/phpmyadmin'... fatal: unable to access 'https://github.com/phpmyadmin/phpmyadmin.git/': The requested URL returned error: 504 fatal: clone of 'https://github.com/phpmyadmin/phpmyadmin.git' into submodule path '/home/docs/checkouts/readthedocs.org/user_builds/phpmyadmin-chinese-china/checkouts/latest/phpmyadmin' failed Failed to clone 'phpmyadmin' a second time, aborting