add slf4j api dependency
@@ -200,6 +200,11 @@ SOFTWARE.
<artifactId>slf4j-log4j12</artifactId>
<scope>runtime</scope>
</dependency>
+ <dependency>
+ <groupId>org.slf4j</groupId>
+ <artifactId>slf4j-api</artifactId>
+ <version>1.8.0-alpha2</version>
+ </dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
