Solved Could not resolve io.papermc.paperweight:paperweight-userdev

[rec]

I can build the paperweight-test-plugin from PaperMC github. But I can't build my project written in kotlin.
The project was initialy created with Intellij minecraft development plugin
build.gradle.kts:

plugins {
    kotlin("jvm") version "2.1.20"
    id("io.papermc.paperweight.userdev") version "2.0.0-beta.16"
    id("com.gradleup.shadow") version "8.3.0"
    id("xyz.jpenilla.resource-factory-bukkit-convention") version "1.2.0"
}

group = "me.RecReo.dedbodies"
version = "0.1"

repositories {
    mavenCentral()
    maven("https://repo.papermc.io/repository/maven-public/") {
        name = "papermc-repo"
    }
    maven("https://oss.sonatype.org/content/groups/public/") {
        name = "sonatype"
    }
//    gradlePluginPortal()
//    maven("https://repo.papermc.io/repository/maven-public/")
}

dependencies {
    paperweight.paperDevBundle("1.21.5-R0.1-SNAPSHOT")
    compileOnly("io.papermc.paper:paper-api:1.21.5")
    implementation("org.jetbrains.kotlin:kotlin-stdlib")
}

val targetJavaVersion = 21
kotlin {
    jvmToolchain(targetJavaVersion)
}

tasks.build {
    dependsOn("shadowJar")
}

tasks.processResources {
    val props = mapOf("version" to version)

    inputs.properties(props)
    filteringCharset = "UTF-8"
    filesMatching("plugin.yml") {
        expand(props)
    }
}

tasks {
    compileKotlin {
        kotlinOptions {
            jvmTarget = "21"
        }
    }
    compileJava {
        options.release.set(21)
    }
    javadoc {
        options.encoding = Charsets.UTF_8.name()
    }
}

tasks.shadowJar {
    destinationDirectory.set(file("outpath"))
    archiveBaseName.set("plugin")
    archiveVersion.set("")
    archiveClassifier.set("")
    dependencies {
        include(dependency("org.jetbrains.kotlin:kotlin-stdlib"))
    }
}

everything else is the same. I have read other posts but I can't figure it out.
If I change the version of paperweight to 1.7.7 another error message appears:

Expected configuration ':paperweightDevelopmentBundle' to contain exactly one file, however, it contains more than one file.

What files? Where are they?
Sorry, I am trying to make my first plugin.
If you can't help me fix this, how can I access the nms without paperweight? In the docs it is said about reflection but I don't understand how to use that?
Thank you

 

[rec]

I needed to update gradle