DirectX 11 Problems

The game is crashing when using DX11, when loading a big map.
Giving the following error:

Engine/Source/Runtime/Windows/D3D11RHI/Private/D3D11Commands.cpp] [Line: 1431] Null SRV (resource 0 bind 0) on UB Layout FInstancedStaticMeshVertexFactoryUniformShaderParameters

How to fix it? This error is destroying 2 years of work