Got this error in Unity 2018.3.0b7 and up(including b9). At the moment using 2018.3.0b5 and there is no such issue.

Got this error in Unity 2018.3.0b7 and up(including b9). At the moment using 2018.3.0b5 and there is no such issue.

Can you report a bug? Thanks
How to report a bug is explained in this document:
https://unity3d.com/unity/beta/guide-to-beta-testing#tab-3