Mixin Error while starting

[Kapitencraft]

Well, the crash report should speak for it self
crash_report.txt

[Darkhax]

Hello, it looks like you are trying to use Bookshelf in a development environment without Mixin remapping enabled. This is required to load mixins using your development mappings of choice. You can see an example of this here.

[Kapitencraft]

It appears that is not all, there is a new error:
crash_report.txt

[Darkhax]

Mod dependencies on Forge need to be deobfuscated for development environments. You should also be using the maven and not a mods folder on your system.

repositories {
    maven { 
      url 'https://maven.blamejared.com' 
    }
}

dependencies {

    implementation fg.deobf("net.darkhax.bookshelf:Bookshelf-Forge-1.19.3:17.0.2")
}