Fix: init failing when ./logs dir is missing

backend.py

+import os
 import aiohttp
 import argparse
 import asyncio
@@ -413,6 +414,10 @@ db = connect(host=args.mongo_host, port=args.mongo_port)
 with open(args.account_file, "r") as f:
     accounts = json.loads(f.read())
 
+if os.path.isdir('./logs') is False:
+    print('Creating ./logs directory')
+    os.mkdir('./logs')
+
 if args.log is not None:
     print("Logging test results to %s", args.log)
     log_file = open(args.log, "a")