Why 'ui.log' is growing huge in Red Hat Enterprise Virtualization 3.6?

Issue

• The log file ui.log grow without control. The message of error is:

2018-04-02 08:23:29,930 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (ajp-/127.0.0.1:8702-149) [] Permutation name: <name>
2018-04-02 08:23:29,931 ERROR [org.ovirt.engine.ui.frontend.server.gwt.OvirtRemoteLoggingService] (ajp-/127.0.0.1:8702-149) [] Uncaught exception: : com.google.gwt.core.client.JavaScriptException: (NS_ERROR_NOT_INITIALIZED) 
 __gwt$exception: <skipped>
 result: 3253927937
 filename: https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html
 lineNumber: 4805
 columnNumber: 0
 inner: null
 data: null
 stack: kr@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:4805:25
hq@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:2757:24
hBd@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:4688:24
mT@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:6283:2573
lBd/c.onreadystatechange<@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:4597:62
Yp@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:3506:26
aq@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:5683:56
_p/<@https://<hostname>/ovirt-engine/userportal/<Permutation name>.cache.html:5519:53
: 
    at Unknown.kr(Unknown Source)
    at Unknown.hq(Unknown Source)
    at Unknown.hBd(Unknown Source)
    at Unknown.mT(Unknown Source)
    at Unknown.lBd/c.onreadystatechange<(Unknown Source)
    at Unknown.Yp(Unknown Source)
    at Unknown.aq(Unknown Source)
    at Unknown._p/<(Unknown Source)
    at Unknown.anonymous(Unknown Source)"