[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:bayad is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-11/INFO] [Mystical Agriculture/]: Loaded 134 crops
[12:38:31] [Worker-ResourceReload-11/INFO] [Mystical Agriculture/]: Loaded 6 crop tiers
[12:38:31] [Worker-ResourceReload-11/INFO] [Mystical Agriculture/]: Loaded 2 crop types
[12:38:31] [Worker-ResourceReload-11/INFO] [Mystical Agriculture/]: Loaded 55 augments
[12:38:31] [Worker-ResourceReload-11/INFO] [Mystical Agriculture/]: Loaded 22 mob soul types
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:box_turtle is using legacy invisible texture, please update it to use the new system!
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [cyclopscore] Starting version check at https://raw.githubusercontent.com/CyclopsMC/Versions/master/neoforge_update/cyclops-core.json
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:gar is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-13/INFO] [journeymap/]: Found @JourneyMapPlugin: journeymap.api.plugins.LoadedChunkOverlayPlugin
[12:38:31] [Worker-ResourceReload-13/INFO] [journeymap/]: Found @JourneyMapPlugin: com.minecolonies.core.compatibility.journeymap.JourneymapPlugin
[12:38:31] [Worker-ResourceReload-10/INFO] [me.co.Mekanism/]: Fake player readout: UUID = 46e82cd0-d480-3d48-800a-77431ede078e, name = [Mekanism]
[12:38:31] [Worker-ResourceReload-10/INFO] [me.co.Mekanism/]: Mod loaded.
[12:38:31] [Worker-ResourceReload-10/INFO] [me.co.Mekanism/]: Loaded 'Mekanism: Tools' module.
[12:38:31] [Worker-ResourceReload-10/INFO] [me.co.Mekanism/]: Loaded 'Mekanism: Additions' module.
[12:38:31] [Worker-ResourceReload-10/INFO] [me.co.Mekanism/]: Loaded 'Mekanism: Generators' module.
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:starshell_turtle is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:brown_trout is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:pollock is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:blackfish is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:boulti is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:muskellunge is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:atlantic_herring is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:atlantic_cod is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:brown_shrooma is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-2/INFO] [minecraft/UnihexProvider]: Found unifont_all_no_pua-15.1.05.hex, loading
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:capitaine is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:synodontis is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:arrau_turtle is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-7/INFO] [integrateddynamics/]: Registered packet handler.
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:red_shrooma is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:smallmouth_bass is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:tuna is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:minnow is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:arapaima is using legacy invisible texture, please update it to use the new system!
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [cyclopscore] Found status: UP_TO_DATE Current: 1.25.7 Target: null
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [integratedterminals] Starting version check at https://raw.githubusercontent.com/CyclopsMC/Versions/master/neoforge_update/integrated-terminals.json
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:perch is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:pacific_halibut is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:red_grouper is using legacy invisible texture, please update it to use the new system!
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [integratedterminals] Found status: UP_TO_DATE Current: 1.6.9 Target: null
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [mcwwindows] Starting version check at https://raw.githubusercontent.com/sketchmacaw/macawsmods/master/window.json
[12:38:31] [Worker-ResourceReload-7/INFO] [integrateddynamicscompat/]: Registered packet handler.
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:rainbow_trout is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:carp is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:piranha is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:jellyfish is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:catfish is using legacy invisible texture, please update it to use the new system!
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [mcwwindows] Found status: BETA Current: 2.3.2 Target: null
[12:38:31] [NeoForge Version Check/INFO] [ne.ne.fm.VersionChecker/]: [controlling] Starting version check at https://updates.blamejared.com/get?n=controlling&gv=1.21.1&ml=neoforge
[12:38:31] [Worker-ResourceReload-5/WARN] [minecraft/SingleFile]: Missing sprite: minecraft:textures/map/map_icons.png
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:bluegill is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:atlantic_halibut is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:pink_salmon is using legacy invisible texture, please update it to use the new system!
[12:38:31] [Worker-ResourceReload-3/ERROR] [de.ft.mo.ft.cl.ma.EntityIcons/]: Entity aquaculture:tambaqui is using legacy invisible texture, please update it to use the new system!

Took me a bit to track down what is throwing this error. Looks like it's FTB Chunks & their Entity Icon system for their minimap.

Something you have added (Mod or resoucepack) adds support for Aqaculture's entities for FTB Chunk's minimap - but it looks to be using an outdated format.

Nothing I can do on my end about it.

Reached out to one of the devs of FTB Chunks. They're going to be fixing it on their end at some point.

They changed the system for Entity Icons, but have only updated the vanilla entity icons.