I cannot seem to get the mod working as it constantly crashes the game with an error message like
"Error: java.lang.IllegalStateException: No renderer registered for aquaculture:bobber"
Here's the crash report:

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 26/03/20 19:46
Description: Initializing game

java.lang.IllegalStateException: No renderer registered for aquaculture:bobber
at net.minecraft.client.renderer.entity.EntityRendererManager.(EntityRendererManager.java:222) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
at net.minecraft.client.Minecraft.(Minecraft.java:425) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
at net.minecraft.client.main.Main.main(SourceFile:166) [?:?] {re:classloading}
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) [forge-1.15.2-31.1.27.jar:31.1] {}
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$408/817941759.call(Unknown Source) [forge-1.15.2-31.1.27.jar:31.1] {}
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?] {}
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?] {}

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

-- Head --
Thread: Render thread
Stacktrace:
at net.minecraft.client.renderer.entity.EntityRendererManager.(EntityRendererManager.java:222)
at net.minecraft.client.Minecraft.(Minecraft.java:425)

-- Initialization --
Details:
Stacktrace:
at net.minecraft.client.main.Main.main(SourceFile:166)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56)
at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$408/817941759.call(Unknown Source)
at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54)
at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72)
at cpw.mods.modlauncher.Launcher.run(Launcher.java:81)
at cpw.mods.modlauncher.Launcher.main(Launcher.java:65)

-- System Details --
Details:
Minecraft Version: 1.15.2
Minecraft Version ID: 1.15.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 835745424 bytes (797 MB) / 2147483648 bytes (2048 MB) up to 2147483648 bytes (2048 MB)
CPUs: 4
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
ModLauncher: 5.0.0-milestone.4+67+b1a340b
ModLauncher launch target: fmlclient
ModLauncher naming: srg
ModLauncher services:
/eventbus-2.0.0-milestone.1-service.jar eventbus PLUGINSERVICE
/forge-1.15.2-31.1.27.jar object_holder_definalize PLUGINSERVICE
/forge-1.15.2-31.1.27.jar runtime_enum_extender PLUGINSERVICE
/accesstransformers-2.0.4-shadowed.jar accesstransformer PLUGINSERVICE
/forge-1.15.2-31.1.27.jar capability_inject_definalize PLUGINSERVICE
/forge-1.15.2-31.1.27.jar runtimedistcleaner PLUGINSERVICE
/preview_OptiFine_1.15.2_HD_U_G1_pre9.jar OptiFine TRANSFORMATIONSERVICE
/forge-1.15.2-31.1.27.jar fml TRANSFORMATIONSERVICE
FML: 31.1
Forge: net.minecraftforge:31.1.27
FML Language Providers:
[email protected]
minecraft@1
Mod List:
forge-1.15.2-31.1.27-client.jar Minecraft {[email protected] COMMON_SETUP}
lostcities-1.15-3.0.1-alpha.jar LostCities {[email protected] COMMON_SETUP}
forge-1.15.2-31.1.27-universal.jar Forge {[email protected] COMMON_SETUP}
Aquaculture-1.15.2-2.0.13.jar Aquaculture 2 {[email protected] COMMON_SETUP}
jei-1.15.2-6.0.0.2.jar Just Enough Items {[email protected] COMMON_SETUP}
Launched Version: 1.15.2-forge-31.1.27
Backend library: LWJGL version 3.2.2 build 10
Backend API: Intel(R) HD Graphics 3000 GL version 3.1.0 - Build 9.17.10.4101, Intel
GL Caps: Using framebuffer using OpenGL 3.0
Using VBOs: Yes
Is Modded: Definitely; Client brand changed to 'forge'
Type: Client (map_client.txt)
CPU: 4x Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz
OptiFine Version: OptiFine_1.15.2_HD_U_G1_pre9
OptiFine Build: 20200223-095745
Render Distance Chunks: 7
Mipmaps: 4
Anisotropic Filtering: 1
Antialiasing: 0
Multitexture: false
Shaders: null
OpenGlVersion: 3.1.0 - Build 9.17.10.4101
OpenGlRenderer: Intel(R) HD Graphics 3000
OpenGlVendor: Intel
CpuCount: 4

You have Optifine for 1.15.2 installed, which is currently not working with Forge.