My Nexus Repository Manager OSS page shows "?"

I am a chinese user,I use Nexus Repository Manager OSS 2.14.9-01 ,the os is centos 6.8
the error is :
image

please help me ,thank you

This is a known issue in Nexus Repo 2.x: https://issues.sonatype.org/browse/NEXUS-5395

It was fixed in version 3.

Regards

Rich

thank you very much.
because of some other things, Do you have any other simple approach to fix the issue without upgrading version 2 to version 3 ?