Read the Docs build information Build id: 10 Project: bpla Version: latest Commit: 6838547d43ad487fa58d8479abb7623a7803641f Date: 2019-07-10T11:59:15.592115+03:00 State: finished Success: False [rtd-command-info] start-time: 2019-07-10T08:59:15.891854+03:00, end-time: 2019-07-10T08:59:15.898631+03:00, duration: 0, exit-code: 0 git remote set-url origin https://github.com/citoruspm/bpla [rtd-command-info] start-time: 2019-07-10T08:59:15.957874+03:00, end-time: 2019-07-10T08:59:17.582375+03:00, duration: 1, exit-code: 0 git fetch --tags --prune --prune-tags --depth 50 [rtd-command-info] start-time: 2019-07-10T08:59:17.837489+03:00, end-time: 2019-07-10T08:59:17.927548+03:00, duration: 0, exit-code: 0 git checkout --force origin/master Note: checking out 'origin/master'. You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make in this state without impacting any branches by performing another checkout. If you want to create a new branch to retain commits you create, you may do so (now or later) by using -b with the checkout command again. Example: git checkout -b HEAD is now at 6838547 Add files via upload [rtd-command-info] start-time: 2019-07-10T08:59:17.988401+03:00, end-time: 2019-07-10T08:59:17.994857+03:00, duration: 0, exit-code: 0 git clean -d -f -f [rtd-command-info] start-time: 2019-07-10T08:59:18.368154+03:00, end-time: 2019-07-10T08:59:18.387282+03:00, duration: 0, exit-code: -1 python3.7 -mvirtualenv --no-site-packages --no-download /opt/readthedocs.org/user_builds/bpla/envs/latest Traceback (most recent call last): File "/opt/readthedocs.org/readthedocs/doc_builder/environments.py", line 183, in run env=environment, File "/usr/lib/python3.6/subprocess.py", line 709, in __init__ restore_signals, start_new_session) File "/usr/lib/python3.6/subprocess.py", line 1344, in _execute_child raise child_exception_type(errno_num, err_msg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'python3.7': 'python3.7'