try to fix container error

sanic/config.py

@@ -107,6 +107,13 @@ LOGGING = {
     }
 }
 
+# this happens when using container or systems without syslog
+# keep things in config would cause file not exists error
+_addr = LOGGING['handlers']['accessSysLog']['address']
+if type(_add) is str and not os.path.exists(_addr):
+    LOGGING['handlers'].pop('accessSysLog')
+    LOGGING['handlers'].pop('errorSysLog')
+
 
 class Config(dict):
     def __init__(self, defaults=None, load_env=True):