Mod version: Schematica-1.8.9-1.7.7.143-universal.jar
Forge version: 11.15.1.2318
Operating system: Windows
Mod list:

• [1.8.9] Powns Coords HUD - 1.0
• [1.8.9] Powns ToggleSneak - 3.0
• Apec-1.10
• LunatriusCore-1.8.9-1.1.2.32-universal
• NotEnoughUpdates-2.0
• OptiFine_1.8.9_HD_U_M5
• Patcher-1.6.1 (1.8.9)
• Resource_Pack_Manager_1.1
• Schematica-1.8.9-1.7.7.143-universal
• Scrollable Tooltips-1.4 (1.8.9)
• SkyblockAddons-1.6.1-for-MC-1.8.9
• Skytils-1.0.8

Crash report: https://pastebin.com/heq6YYpD)