Problem with installing mvn dependency in pom.xml file

When i've tried to integrate this mvn dependecy:
<dependency>
    <groupId>dev.vapi</groupId>
    <artifactId>server-sdk</artifactId>
    <version>0.x.x</version>
</dependency>
I received error telling me that mvn can't find this dependency in mvn repository - meaning that its not even existing in it...

I've also seen a bunch of problems arise when merging branches.
