here is the error report:
---- Minecraft Crash Report ----

WARNING: coremods are present:
LoadingPlugin (RandomThings-MC1.12.2-4.2.7.4.jar)
Contact their authors BEFORE contacting forge

// Shall we play a game?

Time: 3/19/21 3:04 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from CodeChicken Lib (codechickenlib)
Caused by: codechicken.lib.configuration.ConfigFile$ConfigException: codechicken.lib.configuration.ConfigParseException: Invalid value type d, @line:20, dump_asm=true
at codechicken.lib.configuration.ConfigFile.load(ConfigFile.java:61)
at codechicken.lib.configuration.ConfigFile.(ConfigFile.java:43)
at codechicken.lib.configuration.ConfigFile.(ConfigFile.java:29)
at codechicken.lib.configuration.ConfigFile.(ConfigFile.java:19)
at codechicken.lib.CodeChickenLib.preInit(CodeChickenLib.java:50)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:637)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)
at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)
at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)
at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)
at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)
at com.google.common.eventbus.EventBus.post(EventBus.java:217)
at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)
at net.minecraftforge.fml.common.Loader.preinitializeMods(Loader.java:629)
at net.minecraftforge.fml.client.FMLClientHandler.beginMinecraftLoading(FMLClientHandler.java:252)
at net.minecraft.client.Minecraft.func_71384_a(Minecraft.java:467)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:378)
at net.minecraft.client.main.Main.main(SourceFile:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
Caused by: codechicken.lib.configuration.ConfigParseException: Invalid value type d, @line:20, dump_asm=true
at codechicken.lib.configuration.ConfigTag.parseTag(ConfigTag.java:92)
at codechicken.lib.configuration.ConfigFile.load(ConfigFile.java:59)
... 45 more

A detailed walkthrough of the error, its code path and all known details is as follows:

-- System Details --
Details:
Minecraft Version: 1.12.2
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_281, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 148751568 bytes (141 MB) / 371474432 bytes (354 MB) up to 1060372480 bytes (1011 MB)
JVM Flags: 6 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP 9.42 Powered by Forge 14.23.5.2854 Optifine OptiFine_1.12.2_HD_U_F5 7 mods loaded, 7 mods active
States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored

| State | ID             | Version      | Source                            | Signature                                |
|:----- |:-------------- |:------------ |:--------------------------------- |:---------------------------------------- |
| LCH   | minecraft      | 1.12.2       | minecraft.jar                     | None                                     |
| LCH   | mcp            | 9.42         | minecraft.jar                     | None                                     |
| LCH   | FML            | 8.0.99.99    | forge-1.12.2-14.23.5.2854.jar     | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCH   | forge          | 14.23.5.2854 | forge-1.12.2-14.23.5.2854.jar     | e3c3d50c7c986df74c645c0ac54639741c90a557 |
| LCE   | codechickenlib | 3.2.3.357    | CodeChicken Lib.jar               | f1850c39b2516232a2108a7bd84d1cb5df93b261 |
| LC    | jei            | 4.16.1.301   | Just Enough Items.jar             | None                                     |
| LC    | randomthings   | 4.2.7.4      | RandomThings-MC1.12.2-4.2.7.4.jar | d72e0dd57935b3e9476212aea0c0df352dd76291 |

Loaded coremods (and transformers): 

LoadingPlugin (RandomThings-MC1.12.2-4.2.7.4.jar)
lumien.randomthings.asm.ClassTransformer
GL info: ' Vendor: 'NVIDIA Corporation' Version: '4.2.0' Renderer: 'GeForce GTS 450/PCIe/SSE2/3DNOW!'
OptiFine Version: OptiFine_1.12.2_HD_U_F5
OptiFine Build: 20191204-141934
Render Distance Chunks: 2
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 4.2.0
OpenGlRenderer: GeForce GTS 450/PCIe/SSE2/3DNOW!
OpenGlVendor: NVIDIA Corporation
CpuCount: 2