With version 402, some machine textures doesnt appears anymore

Yes please provide the full log

full log : https://pastebin.com/G8wbLz5v

1. Version 402 means next to nothing as it is just a number added by the build system. Granted we could look up what version number that corresponds to but if you insist on leaving a number out of the version number leave the fourth number out... not only provide it.
2. Could you please provide your latest.log file via pastebin or gist or something.

sorry, it is version 1.15.2-9.9.10.402
I have found in logs :
Unable to load model: 'mekanism:block/transmitter/small/small' referenced from: mekanism:basic_universal_cable#waterlogged=true: java.lang.IllegalStateException: Model loader 'mekanism:transmitter' not found. Registered loaders: forge:obj, forge:composite, forge:multi-layer, forge:bucket, minecraft:elements

Unable to load model: 'mekanism:block/transmitter/large/logistical_transporter/transporter' referenced from: mekanism:basic_logistical_transporter#waterlogged=true: java.lang.IllegalStateException: Model loader 'mekanism:transmitter' not found. Registered loaders: forge:obj, forge:composite, forge:multi-layer, forge:bucket, minecraft:elements

Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/diversion_transporter
Unable to resolve texture reference: #missing in minecolonies:block/blockhutwarehouse
Unable to resolve texture reference: #missingno in mekanism:item/basic_pressurized_tube
Unable to resolve texture reference: #missing in minecolonies:item/blockwaypoint
Unable to resolve texture reference: #missing in
Unable to resolve texture reference: #missing in minecolonies:block/blockhutfisherman
Unable to resolve texture reference: #missing in minecolonies:block/blockhutsmeltery
Unable to resolve texture reference: #missingno in mekanism:item/elite_mechanical_pipe
Unable to resolve texture reference: #missing in minecolonies:block/blockhutchickenherder
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/thermodynamic_conductor/ultimate
Unable to resolve texture reference: #missing in minecolonies:block/blockhuttownhall
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/mechanical_pipe/advanced
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/logistical_transporter/elite
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/universal_cable/advanced
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/thermodynamic_conductor/advanced
Unable to resolve texture reference: #missing in minecolonies:block/blockhutsifter
Unable to resolve texture reference: #missingno in mekanism:item/ultimate_pressurized_tube
Unable to resolve texture reference: #missing in minecolonies:item/blockhutcowboy
Unable to resolve texture reference: #missing in minecolonies:item/blockhutchickenherder
Unable to resolve texture reference: #missingno in mekanism:item/restrictive_transporter
Unable to resolve texture reference: #missingno in mekanism:item/elite_thermodynamic_conductor
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/thermodynamic_conductor/basic
Unable to resolve texture reference: #missing in minecolonies:block/blockhutbuilder
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/pressurized_tube/advanced
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/restrictive_transporter
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/universal_cable/basic
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/universal_cable/ultimate
Unable to resolve texture reference: #missing in minecolonies:block/blockhutbarracks
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/pressurized_tube/ultimate
Unable to resolve texture reference: #missingno in mekanism:item/advanced_mechanical_pipe
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/pressurized_tube/basic
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/pressurized_tube/elite
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/logistical_transporter/advanced
Unable to resolve texture reference: #missingno in mekanism:item/ultimate_thermodynamic_conductor
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/mechanical_pipe/elite
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/universal_cable/elite
Unable to resolve texture reference: #missingno in mekanism:item/ultimate_mechanical_pipe
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/logistical_transporter/basic
Unable to resolve texture reference: #missing in minecolonies:item/blockhutcrusher
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/mechanical_pipe/basic
Unable to resolve texture reference: #missingno in mekanism:item/advanced_logistical_transporter
Unable to resolve texture reference: #missingno in mekanism:item/ultimate_logistical_transporter
Unable to resolve texture reference: #missing in minecolonies:item/blockpostbox
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/logistical_transporter/ultimate
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/mechanical_pipe/ultimate
Unable to resolve texture reference: #missingno in mekanism:item/elite_logistical_transporter
Unable to resolve texture reference: #missingno in mekanism:item/basic_mechanical_pipe
Unable to resolve texture reference: #missing in minecolonies:item/blockhutbuilder
Unable to resolve texture reference: #missing in minecolonies:block/blockhutcrusher
Unable to resolve texture reference: #missing in minecolonies:block/blockpostbox
Unable to resolve texture reference: #missing in minecolonies:block/blockhutcowboy
Unable to resolve texture reference: #missingno in mekanism:item/elite_universal_cable
Unable to resolve texture reference: #missingno in mekanism:block/transmitter/small/thermodynamic_conductor/elite
Unable to resolve texture reference: #missingno in mekanism:item/advanced_thermodynamic_conductor
Unable to resolve texture reference: #missing in minecolonies:item/blockhutfisherman
Unable to resolve texture reference: #missingno in mekanism:item/basic_universal_cable
Unable to resolve texture reference: #missingno in mekanism:item/diversion_transporter
Unable to resolve texture reference: #missingno in mekanism:item/advanced_universal_cable
Unable to resolve texture reference: #missing in minecolonies:item/blockhutbarracks
Unable to resolve texture reference: #missingno in mekanism:item/ultimate_universal_cable
Unable to resolve texture reference: #missing in minecolonies:item/blockhuttownhall
Unable to resolve texture reference: #missingno in mekanism:item/advanced_pressurized_tube
Unable to resolve texture reference: #missingno in mekanism:item/basic_thermodynamic_conductor
Unable to resolve texture reference: #missing in minecolonies:block/blockwaypoint
Unable to resolve texture reference: #missing in minecolonies:item/blockhutwarehouse
Unable to resolve texture reference: #missing in minecolonies:item/blockhutsmeltery
Unable to resolve texture reference: #missing in minecolonies:item/blockhutsifter
Unable to resolve texture reference: #missingno in mekanism:item/basic_logistical_transporter
Unable to resolve texture reference: #missingno in mekanism:item/elite_pressurized_tube

do you need the full log ?

Closing as 9.9.11 is now released and on curseforge. I wasn't ever able to reproduce this issue, but I believe it is now fixed after a conversation I had with giga about when the model loaders should actually be registered.

Unsure, can you provide their latest log file

Here is his last log : https://pastebin.com/XSkB7L07

there are a lot of errors like :
[27Feb2020 12:58:01.396] [Server-Worker-6/INFO] [STDERR/]: [net.minecraftforge.client.model.ModelLoaderRegistry:getModel:112]: java.lang.IllegalStateException: Model loader 'mekanism:transmitter' not found. Registered loaders: forge:obj, forge:composite, forge:multi-layer, forge:bucket, minecraft:elements

or

[27Feb2020 12:58:14.341] [Server-Worker-6/WARN] [net.minecraft.client.renderer.model.ModelBakery/]: Unable to resolve texture reference: #missingno in mekanism:block/transmitter/large/diversion_transporter

The version Mekanism-1.15.2-9.9.11.403.jar fixed it on my computer but I still have one of my player having it

9.9.12 is out now, if it still ends up happening on it I would like the debug.log file from their logs folder, as I added a debug log so we can try to track down if it is due to a race condition. Though due to other changes I highly recommend backing up your world/emptying mekanism machines/tanks before updating to 9.9.12.

Here is the lastest.log of this morning just after loading without mekanism textures with version 1.15.2-9.9.15.407 :
latest (1).log

By reloading textures with F3+T, it works so maybe something is done too early

Can you provide the debug.log it should be in the same folder as the latest.log as I only added the message at the debug level.

hum, i dont have this file
do i need to activate the debug level somewhere to generate it ?

I believe I just made a commit that should fix this from being able to happen. I will close the newer issue report of this #5963 when the next alpha is released.

Since the version Mekanism-1.15.2-9.9.16.408, the problem doesnt appear anymore
seems to be fixed
good job