I also try command fllowing your reply，the results are the same.

Thank you very much for your reply.
I followed your command.[1]

Thank you very much for your reply.
And I follow your guidance，now，all the services are started，but when I save code in my Software Heritage platform, the status always failed, I checked log :
swh-loader_1 | [2020-12-18 02:49:13,495: ERROR/ForkPoolWorker-1] Loading failure, updating to partial status
swh-loader_1 | Traceback (most recent call last):
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/dulwich/client.py", line 912, in fetch_pack
swh-loader_1 | refs, server_capabilities = read_pkt_refs(proto)
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/dulwich/client.py", line 215, in read_pkt_refs
swh-loader_1 | for pkt in proto.read_pkt_seq():
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/dulwich/protocol.py", line 277, in read_pkt_seq
swh-loader_1 | pkt = self.read_pkt_line()
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/dulwich/protocol.py", line 223, in read_pkt_line
swh-loader_1 | raise HangupException()
swh-loader_1 | dulwich.errors.HangupException: The remote server unexpectedly closed the connection.
swh-loader_1 |
swh-loader_1 | During handling of the above exception, another exception occurred:
swh-loader_1 |
swh-loader_1 | Traceback (most recent call last):
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/loader/core/loader.py", line 318, in load
swh-loader_1 | more_data_to_fetch = self.fetch_data()
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/loader/git/loader.py", line 239, in fetch_data
swh-loader_1 | self.origin.url, self.base_snapshot, do_progress
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/swh/loader/git/loader.py", line 174, in fetch_pack_from_origin
swh-loader_1 | progress=do_activity,
swh-loader_1 | File "/srv/softwareheritage/venv/lib/python3.7/site-packages/dulwich/client.py", line 914, in fetch_pack
swh-loader_1 | raise _remote_error_from_stderr(stderr)
swh-loader_1 | dulwich.errors.HangupException: ssh: Could not resolve hostname https: Temporary failure in name resolution