When cooking my project in UE5.4.4, I keep getting errors from "TexCoord_Unflipped" in "FVertexFactoryIntermediates" and can't seem to find.

[YellowySmile979]

Excerpt of the log where the error occurred:

[2025.02.03-07.56.30:434][563]UATHelper: Cooking (Windows):   /Plugin/FX/Niagara/Private/NiagaraSpriteVertexFactory.ush:443:39: error: no member named 'TexCoord_Unflipped' in 'FVertexFactoryIntermediates'
[2025.02.03-07.56.30:434][563]UATHelper: Cooking (Windows): 	                Result.TexCoords[2] = Intermediates.TexCoord_Unflipped.xy;
[2025.02.03-07.56.30:434][563]UATHelper: Cooking (Windows): 	                                      ~~~~~~~~~~~~~ ^
[2025.02.03-07.56.30:434][563]PackagingResults: Warning: Failed to compile Material /Game/FYP/Forest/Field_Plants_Pack/Plants/Materials/M_Foliage.M_Foliage (MI:/Game/FYP/Forest/Field_Plants_Pack/Plants/Materials/MI_Plant_09_3_Stem_Y.MI_Plant_09_3_Stem_Y) for platform PCD3D_SM5, Default Material will be used in game.
[2025.02.03-07.56.30:435][563]PackagingResults: Error: no member named 'TexCoord_Unflipped' in 'FVertexFactoryIntermediates'

[YellowySmile979]

Ok so turns out the fix is that, I went to a material that had been listed as an issue (as you can see by the path), search “Niagara” and discovered that an option had been turned on for it.

I then turned it off and everything proceeded to work.