我正在python 2.6，gunicorn 19.9.0上运行flask应用程序。启用access-logfile时，出现记录错误。以下是完整的执行/堆栈跟踪。我真的很想拥有我的访问日志：（。
/usr/bin/gunicorn --log-level=debug --access-logfile=- --error-logfile=- -w 4 -b 0.0.0.0:8000 api:application
[2018-07-10 22:23:56 +0000] [32082] [DEBUG] Current configuration:
...
accesslog: -
disable_redirect_access_to_syslog: False
statsd_host: None
...
errorlog: -
enable_stdio_inheritance: False
worker_class: sync
...
logconfig: None
logconfig_dict: {}
config: None
access_log_format: %(h)s %(l)s %(u)s %(t)s "%(r)s" %(s)s %(b)s "%(f)s" "%(a)s"
....
loglevel: debug
syslog_addr: udp://localhost:514
syslog: False
syslog_prefix: None
.....
logger_class: gunicorn.glogging.Logger
[2018-07-10 22:23:56 +0000] [32082] [INFO] Starting gunicorn 19.9.0
[2018-07-10 22:23:56 +0000] [32082] [DEBUG] Arbiter booted
[2018-07-10 22:23:56 +0000] [32082] [INFO] Listening at: http://0.0.0.0:8000 (32082)
[2018-07-10 22:23:56 +0000] [32082] [INFO] Using worker: sync
[2018-07-10 22:23:56 +0000] [32087] [INFO] Booting worker with pid: 32087
[2018-07-10 22:23:56 +0000] [32092] [INFO] Booting worker with pid: 32092
[2018-07-10 22:23:56 +0000] [32097] [INFO] Booting worker with pid: 32097
[2018-07-10 22:23:56 +0000] [32102] [INFO] Booting worker with pid: 32102
[2018-07-10 22:23:56 +0000] [32082] [DEBUG] 4 workers
[2018-07-10 22:24:02 +0000] [32092] [DEBUG] GET /
Traceback (most recent call last):
File "/usr/lib64/python2.6/logging/__init__.py", line 784, in emit
msg = self.format(record)
File "/usr/lib64/python2.6/logging/__init__.py", line 662, in format
return fmt.format(record)
File "/usr/lib64/python2.6/logging/__init__.py", line 444, in format
record.message = record.getMessage()
File "/usr/lib64/python2.6/logging/__init__.py", line 314, in getMessage
msg = msg % self.args
TypeError: format requires a mapping
[2018-07-10 22:24:13 +0000] [32087] [DEBUG] Closing connection.