Im new to minecraft mods and github but I have a problem my game doesnt launch

[greenapple17savage]

[18:47:44] [main/WARN]:Reference map 'CreateLiquidFuel.refmap.json' for createliquidfuel.mixins.json could not be read. If this is a development environment you can ignore this message
[18:47:44] [main/WARN]:Reference map 'tfmg.refmap.json' for tfmg.mixins.json could not be read. If this is a development environment you can ignore this message
[18:47:44] [main/WARN]:Reference map '' for adapter.init.mixins.json could not be read. If this is a development environment you can ignore this message
[18:47:45] [main/WARN]:Error loading class: net/optifine/render/ChunkVisibility (java.lang.ClassNotFoundException: net.optifine.render.ChunkVisibility)
[18:47:45] [main/WARN]:Error loading class: shadersmod/client/ShadersRender (java.lang.ClassNotFoundException: shadersmod.client.ShadersRender)
[18:47:45] [main/WARN]:Error loading class: net/optifine/shaders/ShadersRender (java.lang.ClassNotFoundException: net.optifine.shaders.ShadersRender)
[18:47:46] [main/WARN]:Error loading class: net/coderbot/iris/pipeline/HandRenderer (java.lang.ClassNotFoundException: net.coderbot.iris.pipeline.HandRenderer)
[18:47:46] [main/WARN]:Error loading class: mekanism/client/render/entity/RenderFlame (java.lang.ClassNotFoundException: mekanism.client.render.entity.RenderFlame)
[18:47:46] [main/WARN]:Error loading class: mekanism/client/render/armor/MekaSuitArmor (java.lang.ClassNotFoundException: mekanism.client.render.armor.MekaSuitArmor)