Windows: cannot open script log on admin page

[bugy]

[Windows only]
When opening a script on admin page, an empty page is opened.
And there is an exception on server:

2019-01-27 17:59:04,956 [tornado.application.ERROR] Uncaught exception GET /admin/execution_log/long/10 (192.168.2.183) 
HTTPServerRequest(protocol='http', host='192.168.2.115:5000', method='GET', uri='/admin/execution_log/long/10', version='HTTP/1.1', remote_ip='192.168.2.183', headers={'Host': '192.168.2.115:5000', 'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0', 'Accept': '*/*', 'Accept-Language': 'en-US,en;q=0.5', 'Accept-Encoding': 'gzip, deflate', 'Referer': 'http://192.168.2.115:5000/admin.html', 'X-Requested-With': 'XMLHttpRequest', 'Connection': 'keep-alive'})
Traceback (most recent call last):
  File "C:\Users\buggy\AppData\Local\Programs\Python\Python36\lib\site-packages\tornado\web.py", line 1509, in _execute
    result = method(*self.path_args, **self.path_kwargs)
  File "src\web\server.py", line 110, in wrapper
    return func(self, *args, **kwargs)
  File "src\web\server.py", line 145, in wrapper
    return func(self, *args, **kwargs)
  File "src\web\server.py", line 677, in get
    log = self.application.execution_logging_service.find_log(execution_id)
  File "src\execution\logging.py", line 183, in find_log
    log = file_content.split(OUTPUT_STARTED_MARKER + '\n', 1)[1]
IndexError: list index out of range