Logger not works in JIRA version 8.0.1

[Max]

Good day!

In java code i try to send error message to the log by using command:

protected Log log = LogFactory.getLog(LoginFilter.class);
---
log.error("Error message");
---

But it can't take effect. Jira logs don't contain "Error message".

In JIRA 7.11.0 this command works fine.

Who knows what the problem is?