RTC 3.0M6a - TypeError: _15 is undefined

I too got this error ,

TypeError: _15 is undefined
((void 0))@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:14984
((void 0))@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:38949
("Personal Loan For Business Person")@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:38966
([object Object])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:38985
()@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15
([object Object])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:38741
([object Object])@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15
([object Object])@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15
("workitem/aboutToSave",[object Array])@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15
([object Object])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:50377
()@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:50865
([object Object])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:50883
([object Object],[object Array],[object Object])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:54707
([object Object],[object Object],[object Array],[object Object],[object Array])@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:20562
(null)@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:20531
(null)@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15
(5)@https://<server>:9443/ccm/web/_js/?exclude=K&include=com.ibm.team.rtc.web.ui.internal.DashboardPage.js&_proxyURL=%2Fccm&locale=en-us:56047
(5)@https://<server>:9443/ccm/web/_js/?include=K~&etag=HIx1y3mjgOx_en_US&_proxyURL=%2Fccm:15

I also got this error

Tayane I found this defect
https://jazz.net/jazz/web/projects/Rational%20Team%20Concert#action=com.ibm.team.workitem.viewWorkItem&id=177124

Not sue what version of RTC you are using.
It would probably be better to start a new thread with the exact details of your specific issue.