<!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
<dependency>
    <groupId>ch.qos.logback</groupId>
    <artifactId>logback-classic</artifactId>
    <version>1.3.0-alpha7</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api --> 
<dependency>
    <groupId>org.slf4j</groupId> 
    <artifactId>slf4j-api</artifactId> 
    <version>2.0.0-alpha3</version> 
</dependency>

SLF4J: The requested version 1.8.99 by your slf4j binding is not compatible with [2.0]
SLF4J: See http://www.slf4j.org/codes.html#version_mismatch for further details.