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Challenge did not pass for {0}: {1}".format(domain, authorization)

执行命令python acme_tiny.py --account-key ./account.key --csr ./domain.csr --acme-dir /data/www/challenges/ > ./signed.crt
报如下错误，域名解析都是正常的，望老师能给些提示.

Getting directory…
Directory found!
Registering account…
Already registered!
Creating new order…
Order created!
Verifying digital-weapp-tree.xyz…
Traceback (most recent call last):
File “acme_tiny.py”, line 198, in
main(sys.argv[1:])
File “acme_tiny.py”, line 194, in main
signed_crt = get_crt(args.account_key, args.csr, args.acme_dir, log=LOGGER, CA=args.ca, disable_check=args.disable_check, directory_url=args.directory_url, contact=args.contact)
File “acme_tiny.py”, line 149, in get_crt
raise ValueError(“Challenge did not pass for {0}: {1}”.format(domain, authorization))
ValueError: Challenge did not pass for digital-weapp-tree.xyz: {u’status’: u’invalid’, u’challenges’: [{u’status’: u’invalid’, u’validationRecord’: [{u’url’: u’http://digital-weapp-tree.xyz/.well-known/acme-challenge/v4Ntp-Jn6chSTKX_gxOatGCqSCXui7KOSUcZhB86j6U’, u’hostname’: u’digital-weapp-tree.xyz’, u’addressUsed’: u’154.8.222.182’, u’port’: u’80’, u’addressesResolved’: [u’154.8.222.182’]}], u’url’: u’https://acme-v02.api.letsencrypt.org/acme/chall-v3/1124003396/ixQORQ’, u’token’: u’v4Ntp-Jn6chSTKX_gxOatGCqSCXui7KOSUcZhB86j6U’, u’error’: {u’status’: 400, u’type’: u’urn:ietf:params:acme:error:connection’, u’detail’: u’Fetching http://digital-weapp-tree.xyz/.well-known/acme-challenge/v4Ntp-Jn6chSTKX_gxOatGCqSCXui7KOSUcZhB86j6U: Timeout during connect (likely firewall problem)’}, u’type’: u’http-01’}, {u’status’: u’invalid’, u’url’: u’https://acme-v02.api.letsencrypt.org/acme/chall-v3/1124003396/e1n1qA’, u’token’: u’v4Ntp-Jn6chSTKX_gxOatGCqSCXui7KOSUcZhB86j6U’, u’type’: u’dns-01’}, {u’status’: u’invalid’, u’url’: u’https://acme-v02.api.letsencrypt.org/acme/chall-v3/1124003396/b6oMZg’, u’token’: u’v4Ntp-Jn6chSTKX_gxOatGCqSCXui7KOSUcZhB86j6U’, u’type’: u’tls-alpn-01’}], u’identifier’: {u’type’: u’dns’, u’value’: u’digital-weapp-tree.xyz’}, u’expires’: u’2019-11-14T06:43:29Z’}