[SDK] get_log error when experiment is not started

IndexError                                Traceback (most recent call last)
<ipython-input-13-8bf55eff97d1> in <module>
----> 1 submarine_client.get_log(id)~/opt/anaconda3/envs/python3-7/lib/python3.7/site-packages/submarine/experiment/api/experiment_client.py in get_log(self, id, master)
    124 
    125         if master is True:
--> 126             log_contents = [log_contents[0]]
    127 
    128         for log_content in log_contents:IndexError: list index out of range