Solved POM.XML Strange error

Hello everyone,
I'm getting an error with my POM.XML in Eclipse. Does anyone know the cause? If so, how can I prevent it?

Code:

The POM for net.aufdemrand:sentry:jar:1.8.6 is invalid, transitive dependencies (if any) will not be available, enable debug logging for more details

My POM.XML is below

Code:

<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>io.github.Emalton</groupId>
    <artifactId>ROBOTS</artifactId>
    <version>0.0.2-SNAPSHOT</version>
    <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      </properties>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
    <repositories>
        <repository>
            <id>bukkit-repo</id>
            <url>https://hub.spigotmc.org/nexus/content/groups/public/</url>
        </repository>
        <repository>
            <id>everything</id>
            <url>http://repo.citizensnpcs.co/</url>
        </repository>
        <repository>
            <id>confuser-repo</id>
            <url>http://ci.frostcast.net/plugin/repository/everything</url>
        </repository>
        <repository>
            <id>dynmap-repo</id>
            <url>http://repo.mikeprimm.com/</url>
        </repository>
        <repository>
            <id>vault-repo</id>
            <url>http://nexus.theyeticave.net/content/repositories/pub_releases</url>
        </repository>
    </repositories>
    <dependencies>
        <dependency>
            <groupId>org.spigotmc</groupId>
            <artifactId>spigot-api</artifactId>
            <version>1.8.6-R0.1-SNAPSHOT</version>
            <type>jar</type>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>net.citizensnpcs</groupId>
            <artifactId>citizens</artifactId>
            <version>2.0.16-SNAPSHOT</version>
            <type>jar</type>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>net.aufdemrand</groupId>
            <artifactId>sentry</artifactId>
            <version>1.8.6</version>
            <type>jar</type>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>me.confuser</groupId>
            <artifactId>BarAPI</artifactId>
            <version>3.3</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>us.dynmap</groupId>
            <artifactId>dynmap-api</artifactId>
            <version>2.2-SNAPSHOT</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>
</project>

EDIT:
Once I start my server with my plugin, I get this:

Code:

[11:43:29 ERROR]: Could not load 'plugins/ROBOTS-0.0.2-SNAPSHOT.jar' in folder 'plugins'

org.bukkit.plugin.UnknownDependencyException: sentry

at org.bukkit.plugin.SimplePluginManager.loadPlugins(SimplePluginManager.java:219) [minecraft_server.jar:git-Spigot-ae40327-8c14eb4]

at org.bukkit.craftbukkit.v1_8_R3.CraftServer.loadPlugins(CraftServer.java:291) [minecraft_server.jar:git-Spigot-ae40327-8c14eb4]

at net.minecraft.server.v1_8_R3.DedicatedServer.init(DedicatedServer.java:198) [minecraft_server.jar:git-Spigot-ae40327-8c14eb4]

at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:528) [minecraft_server.jar:git-Spigot-ae40327-8c14eb4]

at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]

Thanks in advance,

Emalton

Anyone have any suggestions? I could use some help here!

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Bump, I am still stuck! Can someone point me into a direction?

Can someone help please?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Nevermind, I figured the problem. Thanks for the lack of help.