log api error details in WARNING level
log api error details in WARNING level

lucius-feng/seafile-client,haiwen/seafile-client,haiwen/seafile-client,lucius-feng/seafile-client,daodaoliang/seafile-client,losingle/seafile-client,losingle/seafile-client,daodaoliang/seafile-client,lucius-feng/seafile-client,losingle/seafile-client,daodaoliang/seafile-client,lucius-feng/seafile-client,losingle/seafile-client,haiwen/seafile-client,daodaoliang/seafile-client,haiwen/seafile-client