# Mods not loaded in headless mode on linux **URL:** \ **Category:** General\ **Tags:** mods\ **Created:** [28 May 2025 14:23 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194 "2025-05-28T14:23:48Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [28 May 2025 14:23 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/1 "2025-05-28T14:23:48Z")
Hello, when using the headless flag on linux my mod is not recognized anymore when loading it through BeamNGpy or `-lua "extensions.load('xlab_xlabCore')"`. I get this error: ` 1.94681|E|GELua.extensions| extension unavailable: "xlab_xlabCore" at location: "xlab/xlabCore"` But without the headless flag it works just well. My mod is zipped in the user mod folder and provides `lua/ge/extensions/xlab/xlabCore.lua`. While looking at the lua codebase I also found this comment: `-headless is working differently than expected and should not be used` Is the `-noui` flag different? Any help appreciated. ---
**Author:** ![asaeed](https://forum.beamng.tech/user_avatar/forum.beamng.tech/asaeed/32/21_2.png) [@asaeed](https://forum.beamng.tech/u/asaeed)\ **Post date:** [30 May 2025 13:28 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/2 "2025-05-30T13:28:55Z")
Hello @comejv, Headless mode shouldn’t affect the extensions. However, for the time being, please place the `/xlab` directory inside the following path in your BeamNG.tech root folder Let me know if you need further assistance! ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [30 May 2025 17:25 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/3 "2025-05-30T17:25:19Z")
Hello @asaeed, Thank you for your answer! Copying lua/ge/extensions/xlab from my mod folder to the BeamNG root sources worked. What’s weird is that: - I didn’t need to copy the files in lua/vehicles… - I needed to use both `-headless` _and_ `-noui` at the same time otherwise the extension cannot be found, even after copying to root folder. But also the console has a lot of errors due to headless, mainly : ```auto 13.24670|E|queueJSUITexture| UI texture '@screen_gps' not found. Unable to execute JS code: map.setData({"terrainTiles":{},"time":"13:20","nodes":{}}) 13.35641|E|queueJSUITexture| UI texture '@screen_gps' not found. Unable to execute JS code: map.updateData({"x":-6.5611102399998e-06,"speed":0.027057242766023,"y":-0.00014384717451321,"zoom":150.04058586415,"ignitionLevel":2,"rotation":180.00030133538}) 13.35643|E|queueJSUITexture| (currently available UI textures: ) ``` I tried putting `if headless_mode then return end` in a few places in `vehicle/controller/beamNavigator.lua` without success. Any idea how to suppress the error or fix it? Thank you. ---
**Author:** ![asaeed](https://forum.beamng.tech/user_avatar/forum.beamng.tech/asaeed/32/21_2.png) [@asaeed](https://forum.beamng.tech/u/asaeed)\ **Post date:** [30 May 2025 18:34 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/4 "2025-05-30T18:34:19Z")
Hello @comejv, Thank you for your feedback — we’ll look into it. Could you please let us know your versions of BeamNG.tech, BeamNGpy, and your Linux distribution and version? Thank you. ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [30 May 2025 18:37 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/5 "2025-05-30T18:37:21Z")
Sure thing! 0.35, 1.32, Ubuntu 24.04.2 LTS on kernel 6.8.0-60-generic. If you need me to run tests on my end don’t hesitate to ask! ---
**Author:** ![aivora](https://forum.beamng.tech/user_avatar/forum.beamng.tech/aivora/32/13_2.png) [@aivora](https://forum.beamng.tech/u/aivora)\ **Post date:** [4 June 2025 07:29 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/6 "2025-06-04T07:29:52Z")
Hi, thank you for the report, I fixed the issue for 0.36 🙂 Headless mode is the only mode that works without spawning a window, not sure what the comments in lua codebase try to say. ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [4 June 2025 10:29 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/7 "2025-06-04T10:29:35Z")
Thanks a lot! Any quick patch I can apply? ---
**Author:** ![aivora](https://forum.beamng.tech/user_avatar/forum.beamng.tech/aivora/32/13_2.png) [@aivora](https://forum.beamng.tech/u/aivora)\ **Post date:** [4 June 2025 12:21 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/8 "2025-06-04T12:21:20Z")
Running with both `-headless -noui` should work as a quick fix, after the patch `-noui` can be removed (but should not cause extra issues). ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [4 June 2025 14:44 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/9 "2025-06-04T14:44:13Z")
What about the `queueJSUITexture` errors, any way to block them? ---
**Author:** ![aivora](https://forum.beamng.tech/user_avatar/forum.beamng.tech/aivora/32/13_2.png) [@aivora](https://forum.beamng.tech/u/aivora)\ **Post date:** [5 June 2025 07:33 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/10 "2025-06-05T07:33:57Z")
You should be able to patch `lua/ge/extensions/ui/uiNavi.lua` like this: ```lua local function requestVehicleDashboardMap(dashboard, initmap, vehId) if not dashboard then return end if headless_mode then return end -- add this line local targetVeh = vehId and scenetree.findObjectById(vehId) or getPlayerVehicle(0) if targetVeh then -- ... rest of function end ``` Or disable/remove any navigation dashboards you are using (the UI app, but also navigation dashboards inside vehicles). ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [5 June 2025 14:45 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/11 "2025-06-05T14:45:59Z")
The patch didn’t work. I tried adding that line in uiNavi, beamNavigator, dynoClient and vehicles (basically at every mention of queueJSUITexture) and I still get this error approx 15 times per second: ```auto 13.82670|E|queueJSUITexture| UI texture '@screen_gps' not found. Unable to execute JS code: map.updateData({"x":0.0017002310266889,"speed":15.318448448181,"y":-1.7668433804065,"zoom":172.97767267227,"ignitionLevel":2,"rotation":180.11276650324}) 13.82672|E|queueJSUITexture| (currently available UI textures: ) ``` Is there a way to remove the dashboards using beamngpy? Or in Lua? ---
**Author:** ![aivora](https://forum.beamng.tech/user_avatar/forum.beamng.tech/aivora/32/13_2.png) [@aivora](https://forum.beamng.tech/u/aivora)\ **Post date:** [6 June 2025 08:30 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/12 "2025-06-06T08:30:19Z")
Can you please share the script that spams these errors? I cannot reproduce and would have to guess where the issues come from. There are a few more places which call `queueJSUITexture` under the hood, for example the `obj:queueWebViewJS` function, but I didn’t manage to set up an environment where I’d get the logspam. ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [9 June 2025 18:26 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/13 "2025-06-09T18:26:44Z")
Hello, here is the minimal steps needed to reproduce the issue on my end: ```python >>> from beamngpy import BeamNGpy, Scenario, Vehicle >>> b = BeamNGpy(host="127.0.0.1", port=25252) >>> scenario = Scenario("tech_ground", "On how to use custom mods") >>> v=Vehicle("ego_vehicle", model="etk800", license="AI") >>> scenario.add_vehicle(v, pos=(0, 0, 0), rot_quat=(0, 0, 1, 0)) >>> b.open() >>> scenario.make(b) >>> b.scenario.load(scenario) ``` Exerpts from the lua console that seem relevant: ```auto 160.45826|I|spawn| Spawning object 'etk800' with default config 160.48770|D|GELua.core_vehicle_manager.vehicleLoader| partConfigData [string] = "" 160.48877|W|GELua.core_vehicle_partmgmt.| Problems reading requested configuration: "" 160.48885|W|GELua.core_vehicle_partmgmt.main| Supplied config file: not found. Using default config instead. 160.52286|E|GELua.jbeam.loadJBeamFile| Duplicate part found: license_plate_qld_1 from file /vehicles/common/licenseplates/mount_coottha/license-plate-mountcoottha-2-1.jbeam ... 161.40896|I|BeamNGVehicle| Unable to create UI texture, as UI is disabled 161.41715|I|BeamNGVehicle| Unable to create UI texture, as UI is disabled 161.41726|E|queueJSUITexture| UI texture '@etk800_gauges_screen' not found. Unable to execute JS code: setup({"uiUnitPower":"hp","uiUnitTorque":"metric","uiUnitVolume":"l","uiUnitDate":"ger","uiUnitConsumptionRate":"metric","uiUnitLength":"metric","displayWidth":512,"materialName":"@etk800_gauges_screen","displayHeight":256,"uiUnitWeight":"kg","uiUnitEnergy":"metric","uiUnitPressure":"bar","uiUnitTemperature":"c","htmlPath":"local://local/vehicles/etk800/gauges_screen/gauges_screen.html","unit":"metric"}) 161.41726|E|queueJSUITexture| (currently available UI textures: ) 161.42369|E|GELua.scenario_scenarios.scenarios| Prefab: on how to use custom mods already exist in level. Rejecting loading of duplicate. ... 161.93113|D|GELua.core_gamestate.gamestate| exiting : worldReadyState 161.93113|W|GELua.core_gamestate.gamestate| trying to exit state we haven't been in before -please check your code 161.93114|D|GELua.core_gamestate.gamestate| show main menu (false) 161.93115|D|GELua.core_gamestate.gamestate| exiting loading screen to menu ... 162.00093|E|queueJSUITexture| UI texture '@etk800_screen' not found. Unable to execute JS code: map.updateData({"x":9.291918541976e-05,"speed":0.33106674849987,"y":0.00031327302394857,"zoom":150.49660012275,"ignitionLevel":2,"rotation":359.99563368789}) 162.00097|E|queueJSUITexture| (currently available UI textures: ) 162.02892|E|queueJSUITexture| UI texture '@etk800_screen' not found. Unable to execute JS code: map.updateData({"x":-4.9842790303956e-05,"speed":0.4200365871191,"y":0.00037013318146251,"zoom":150.63005488068,"ignitionLevel":2,"rotation":359.99943127307}) 162.02894|E|queueJSUITexture| (currently available UI textures: ) 162.04114|D|libbeamng.XalVE| Loaded vehicle xlabCore 162.04121|I|libbeamng.TechCom| Started listening on 127.0.0.1/42749. 162.05289|I|GELua.tech_techCore.TechGE| New vehicle connection: 2665, 42749 162.06897|E|queueJSUITexture| UI texture '@etk800_screen' not found. Unable to execute JS code: map.updateData({"x":0.00015931217882326,"speed":0.48061328530312,"y":-0.00023253862434558,"zoom":150.72091992795,"ignitionLevel":2,"rotation":359.99977278252}) 162.06899|E|queueJSUITexture| (currently available UI textures: ) ... 162.39889|I|libbeamng.TechVE| Accepted new vehicle client: 127.0.0.1/38918 162.44295|E|queueJSUITexture| UI texture '@etk800_screen' not found. Unable to execute JS code: map.updateData({"x":7.638679729105e-05,"speed":0.32665564119816,"y":-0.00028206199522174,"zoom":150.4899834618,"ignitionLevel":2,"rotation":359.99958153723}) 162.44297|E|queueJSUITexture| (currently available UI textures: ) etc. ``` And changing the vehicle model to `utv` gives the `@screen_gps` errors I reported earlier. These results are with the suggested `requestVehicleDashboardMap` patch, without loading my extensions. ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [9 June 2025 21:41 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/14 "2025-06-09T21:41:40Z")
Quick update, after trying things from a clean install of BeamNG I realised that putting my mod’s files in the main lua folder is not what resolved the issue, I only needed `-noui` in addition to `-headless`. The `queueJSUITexture` issue continues. ---
**Author:** ![aivora](https://forum.beamng.tech/user_avatar/forum.beamng.tech/aivora/32/13_2.png) [@aivora](https://forum.beamng.tech/u/aivora)\ **Post date:** [13 June 2025 14:00 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/15 "2025-06-13T14:00:46Z")
Hi again, thank you for the update, I tested with the 0.35.5.0 BeamNG.tech build with the `-headless` argument and the Python script you provided, and I’m not getting any errors relaed to `queueJSUITexture`. Did you also try without the mod? Only thing I can think of is that one of the files in the mod overrides a BeamNG Lua file, causing this error to happen. ---
**Author:** ![comejv](https://forum.beamng.tech/user_avatar/forum.beamng.tech/comejv/32/75_2.png) [@comejv](https://forum.beamng.tech/u/comejv)\ **Post date:** [13 June 2025 15:06 UTC](https://forum.beamng.tech/t/mods-not-loaded-in-headless-mode-on-linux/194/16 "2025-06-13T15:06:10Z")
Thank you for the update. Have you tried with the `-noui` flag? The issue only appears when I use both `-headless` and `-noui`. I need the latter because without it my mod is not found by BNG when using `-headless`. On my end the issue appears even on a freshly unzipped BNG and with the mod deleted from user folder.