Question Invalid Plugin Exception: Did not find a valid velocity-plugin.json

[SpektrSoyuz]

Hi, When I start a Velocity server with my plugin, it gives the following error:

[17:20:47 ERROR]: Unable to load plugin plugins\dataplugin-1.0.0.jar
com.velocitypowered.api.plugin.InvalidPluginException: Did not find a valid velocity-plugin.json.
        at com.velocitypowered.proxy.plugin.loader.java.JavaPluginLoader.loadCandidate(JavaPluginLoader.java:65) ~[velocity.jar:3.4.0-SNAPSHOT (git-9cfcfcf2-b451)]
        at com.velocitypowered.proxy.plugin.VelocityPluginManager.loadPlugins(VelocityPluginManager.java:101) ~[velocity.jar:3.4.0-SNAPSHOT (git-9cfcfcf2-b451)]
        at com.velocitypowered.proxy.VelocityServer.loadPlugins(VelocityServer.java:418) ~[velocity.jar:3.4.0-SNAPSHOT (git-9cfcfcf2-b451)]
        at com.velocitypowered.proxy.VelocityServer.start(VelocityServer.java:289) ~[velocity.jar:3.4.0-SNAPSHOT (git-9cfcfcf2-b451)]
        at com.velocitypowered.proxy.Velocity.main(Velocity.java:71) ~[velocity.jar:3.4.0-SNAPSHOT (git-9cfcfcf2-b451)]

Here is the main class and pom.xml for my plugin:

package com.spektrsoyuz.data;

import com.google.inject.Inject;
import com.velocitypowered.api.event.proxy.ProxyInitializeEvent;
import com.velocitypowered.api.event.Subscribe;
import com.velocitypowered.api.event.proxy.ProxyShutdownEvent;
import com.velocitypowered.api.plugin.Plugin;
import com.velocitypowered.api.proxy.ProxyServer;
import org.jetbrains.annotations.NotNull;
import org.slf4j.Logger;
import org.spongepowered.configurate.ConfigurationNode;
import org.spongepowered.configurate.yaml.NodeStyle;
import org.spongepowered.configurate.yaml.YamlConfigurationLoader;

import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.sql.SQLException;

@Plugin(
    id = "dataplugin",
    name = "Data Plugin",
    version = "1.0.0",
    description = "A velocity plugin",
    authors = {"SpektrSoyuz"}
)
public class DataPlugin {

    private static DataPlugin instance;

    private final ProxyServer server;
    private final Logger logger;
    private final Path dataFolder;
    private final VelocityConfig config;

    @Inject
    public DataPlugin(ProxyServer server, Logger logger, Path dataFolder) {
        instance = this;

        this.server = server;
        this.logger = logger;
        this.dataFolder = dataFolder;
    }

    @Subscribe
    public void onProxyInitialization(ProxyInitializeEvent event) {
        this.logger.info("{} {} has been enabled!", this.getClass().getAnnotation(Plugin.class).name(), this.getClass().getAnnotation(Plugin.class).version());
    }

    @Subscribe
    public void onProxyShutdown(ProxyShutdownEvent event) {
        this.logger.info("{} {} has been disabled!", this.getClass().getAnnotation(Plugin.class).name(), this.getClass().getAnnotation(Plugin.class).version());
    }

    public @NotNull ProxyServer getServer() {
        return this.server;
    }

    public static DataPlugin getInstance() {
        return instance;
    }
}

<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.spektrsoyuz</groupId>
    <artifactId>dataplugin</artifactId>
    <version>1.0.0</version>
    <packaging>jar</packaging>

    <properties>
        <main.class>com.spektrsoyuz.data.DataPlugin</main.class>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>

    <repositories>
        <repository>
            <id>papermc</id>
            <url>https://repo.papermc.io/repository/maven-public/</url>
        </repository>
    </repositories>

    <dependencies>
        <dependency>
            <groupId>com.velocitypowered</groupId>
            <artifactId>velocity-api</artifactId>
            <version>3.4.0-SNAPSHOT</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.zaxxer</groupId>
            <artifactId>HikariCP</artifactId>
            <version>6.2.1</version>
            <scope>compile</scope>
        </dependency>
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <version>9.1.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.4.2</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.13.0</version>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

 

[electronicboy]

That would suggest that the annotation processor didn't run, you'll need to figure out how to get java annotation processors to run, in gradle you'd use kapt, no idea about maven