I clicked on a frozen fluid pump on Aquilo to insert some modules and got this error:

Error while running event FilterHelper::on_gui_opened (ID 95)
FilterHelper/control.lua:33: attempt to index field '?' (a nil value)
stack traceback:
FilterHelper/control.lua:33: in function 'spoil_closure'
FilterHelper/control.lua:48: in function 'build_sprite_buttons'
FilterHelper/control.lua:500: in function 'update_ui'
FilterHelper/control.lua:526: in function <FilterHelper/control.lua:521>

Modules in a pump? Is that from a mod?

Which mods are you running?

I meant the pumpjack, sorry.

Here's my mod list:

automatic-station-painter
automatic-underground-pipe-connectors
Automatic_Train_Painter
barrel-stages
BarrelFluidIcons
belt-visualizer
Better-TrainHorn
better-victory-screen
biterexpansionnotifier
BottleneckLite
bullet-trails
chest-auto-sort
CircuitConditionScreen
CopyPasteModules
CursorEnhancements
DarkNight
DiscoScience
EvenDistributionLite
FactorySearch
FilterHelper
FilterMiningDrills
Fireproof-Bots-2
flib
Fluid-level-indicator
FluidWagonColorMask
freshness-recipe-tooltip
Gun_Turret_Alerts
inventory-mover
Milestones
mining-patch-planner
mushroom-cloud
nixie-tubes
pump
puppy-vehicle-fuel-ui
RateCalculator
RealisticOres
restore-night-vision
science-pack-dependencies
science-pack-glow-reborn
simple-vehicle-physics
sonaxaton-nightvision-toggle
Soundpack-alerts-and-sirens-updated-v1-1
StatsGui
textplates
VehicleSnap

Will be fixed in the next version.