Unity crashes on creating LWRP project

Steps to Repro:
1. Create a new LWRP Project
2. Wait for the project to load

Actual Result:
Editor crashes on opening project

Expected Result;
The project should open gracefully

Environment:
Windows and Mac

Occurring with:
2019.2.0a12

Working with:
2019.2.0a11, 2019.1.0f2

Stack Trace of Crashed Thread 18736:
0x00007FFAF711A271 (ntdll) RtlUserThreadStart

Note:
On relaunching the project getting following stack trace

WARNING: Shader Unsupported: 'Hidden/PostProcessing/Uber' - Pass '' has no vertex shader
WARNING: Shader Unsupported: 'Hidden/PostProcessing/Uber' - Pass '' has no vertex shader
Launched and connected shader compiler UnityShaderCompiler.exe after 0.05 seconds
Requesting non existent keyword at index 84.

(Filename: C:\buildslave\unity\build\Runtime/Shaders/ShaderKeywords.cpp Line: 236)

Requesting non existent keyword at index 85.