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[Server Error] Could not find outer ParticleModule

Someone on AnswerHub suggested it only affects 4.26, but not 4.27. The server will run despite these errors.

[2021.08.11-12.55.46:982][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_21 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:052][ 0]LogStreaming: Error: Could not find outer ParticleModuleCollisionGPU_0 to create ResilienceDistribution
[2021.08.11-12.55.47:053][ 0]LogStreaming: Error: Could not find outer ParticleModuleCollisionGPU_0 to create ResilienceScaleOverLifeDistribution
[2021.08.11-12.55.47:054][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_1 to create DistributionFloatConstantCurve_0
[2021.08.11-12.55.47:055][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_1 to create DistributionVectorConstant_0
[2021.08.11-12.55.47:055][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_12 to create DistributionFloatParticleParameter_0
[2021.08.11-12.55.47:056][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_12 to create DistributionVectorParticleParameter_0
[2021.08.11-12.55.47:056][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_3 to create DistributionFloatParticleParameter_0
[2021.08.11-12.55.47:056][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_3 to create DistributionVectorParticleParameter_0
[2021.08.11-12.55.47:057][ 0]LogStreaming: Error: Could not find outer ParticleModuleCollisionGPU_0 to create ResilienceDistribution
[2021.08.11-12.55.47:058][ 0]LogStreaming: Error: Could not find outer ParticleModuleCollisionGPU_0 to create ResilienceScaleOverLifeDistribution
[2021.08.11-12.55.47:058][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_1 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:059][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_4 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:061][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorOverLife_5 to create DistributionFloatConstantCurve_1
[2021.08.11-12.55.47:061][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorOverLife_5 to create DistributionVectorConstantCurve_1
[2021.08.11-12.55.47:062][ 0]LogStreaming: Error: Could not find outer ParticleModuleLocationPrimitiveSphere_0 to create DistributionVelocityScale
[2021.08.11-12.55.47:062][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_0 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:063][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_2 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:063][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_3 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:064][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_4 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:064][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_8 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:072][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_5 to create DistributionFloatParticleParameter_0
[2021.08.11-12.55.47:073][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_5 to create DistributionVectorParticleParameter_0
[2021.08.11-12.55.47:074][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_9 to create DistributionFloatParticleParameter_0
[2021.08.11-12.55.47:074][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_9 to create DistributionVectorParticleParameter_0
[2021.08.11-12.55.47:075][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_0 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:075][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_1 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:075][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_10 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:076][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_11 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:076][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_14 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:078][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_16 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:078][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_2 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:078][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_3 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:079][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_6 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:080][ 0]LogStreaming: Error: Could not find outer ParticleModuleSubUV_15 to create DistributionFloatUniform_0
[2021.08.11-12.55.47:080][ 0]LogStreaming: Error: Could not find outer ParticleModuleSubUV_5 to create DistributionFloatConstant_0
[2021.08.11-12.55.47:088][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_9 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:138][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_1 to create DistributionFloatParticleParameter_0
[2021.08.11-12.55.47:139][ 0]LogStreaming: Error: Could not find outer ParticleModuleColorScaleOverLife_1 to create DistributionVectorParticleParameter_0
[2021.08.11-12.55.47:144][ 0]LogStreaming: Error: Could not find outer ParticleModuleRequired_3 to create RequiredDistributionSpawnRate
[2021.08.11-12.55.47:145][ 0]LogStreaming: Error: Could not find outer ParticleModuleSpawn_2 to create BurstScaleDistribution
[2021.08.11-12.55.47:145][ 0]LogStreaming: Error: Could not find outer ParticleModuleSpawn_5 to create BurstScaleDistribution

Niagara and cascade modules not found on the server
https://answers.unrealengine.com/questions/1006424/niagara-and-cascade-modules-not-found-on-the-serve.html

Perhaps related, also had these PhysX3 errors, which could be fixed by copying the PhysX3 folder into the build directory, as explained at

I am new to Server setup, perhaps things like particle effects are only client side, thus, UE omits these files on the server.

If someone knows more please share, thanks.

ps. posted this in the wrong forum, please move the thread, thanks.

I am having same issue. I upgraded from 4.25(Working) to 4.26(Not working) then 4.27(Not working).
I am also getting error for world composition and virtual texture is not working in any built file (in editor it works perfectly)
I have no idea, what is happening.