State of Unreal Landscape System

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16

i got this error on compile something to do with → FVertexFactoryInterpolantsVSToDS
trying to get full errors. Think it has something with the way i set my normal textures up.

  [2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
[SM5] 
/Engine/Private/ShadowDepthVertexShader.usf(180,2- 
33):  error X3000: unrecognized identifier 
'FVertexFactoryInterpolantsVSToDS'

 [2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
 [SM5] 
/Engine/Private/LightMapDensityShader.usf(26,3-34):  
error X3000: unrecognized identifier 
 'FVertexFactoryInterpolantsVSToDS'

  [2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
  [SM5] /Engine/Private/HitProxyVertexShader.usf(37,3- 
  34):  error X3000: unrecognized identifier 
 'FVertexFactoryInterpolantsVSToDS'

  [2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
  [SM5] 
  /Engine/Private/BasePassVertexCommon.ush(36,3- 
  34):  
    error X3000: unrecognized identifier 
  'FVertexFactoryInterpolantsVSToDS'

   [2021.05.17-17.35.57:965][457]MaterialEditorStats: 
Error: 
 [SM5] 
 /Engine/Private/DepthOnlyVertexShader.usf(30,3- 
  34):  error X3000: unrecognized identifier 
  'FVertexFactoryInterpolantsVSToDS'

  [2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
  [SM5] /Engine/Private/VelocityShader.usf(49,3-34):  
  error 
 X3000: unrecognized identifier 
 'FVertexFactoryInterpolantsVSToDS'

[2021.05.17-17.35.57:965][457]MaterialEditorStats: Error: 
[SM5] /Engine/Private/AnisotropyPassShader.usf(25,3- 
34):  error X3000: unrecognized identifier 
 'FVertexFactoryInterpolantsVSToDS'

i look into its shader and it needs this → FVertexFactoryInterpolantsVSToPS

Can not seem to figure out what is causing this error.