java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.JDK14LoggerFactory loaded from file:/home/jenkins/.m2/repository/org/slf4j/slf4j-jdk14/1.7.21/slf4j-jdk14-1.7.21.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.JDK14LoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext

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There's some conflicting dependencies in your pom.xml. Try adding an entry to exclude org.eclipse.jetty.aggregate from dependencies, as this seems to solve the problem.

Solutions on the web

via GitHub by spencergibb
, 1 year ago
/slf4j-jdk14-1.7.21.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.JDK14LoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
via Stack Overflow by Amar AttilaZz
, 1 year ago
/bean-validator.jar). If you are using Weblogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.JDK14LoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
via GitHub by nurgasemetey
, 1 year ago
/logging/log4j/log4j-slf4j-impl/2.6.2/log4j-slf4j-impl-2.6.2.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.apache.logging.slf4j.Log4jLoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
via fatal-errors.com by Unknown author, 2 years ago
/1.7.12/slf4j-log4j12-1.7.12.jar). If you are using Weblogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.Log4jLoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
via fatal-errors.com by Unknown author, 2 years ago
/1.7.12/slf4j-log4j12-1.7.12.jar). If you are using Weblogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.Log4jLoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
via Stack Overflow by Amogh RAO
, 1 year ago
/1.7.12/slf4j-log4j12-1.7.12.jar). If you are using Weblogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.Log4jLoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
java.lang.IllegalArgumentException: LoggerFactory is not a Logback LoggerContext but Logback is on the classpath. Either remove Logback or the competing implementation (class org.slf4j.impl.JDK14LoggerFactory loaded from file:/home/jenkins/.m2/repository/org/slf4j/slf4j-jdk14/1.7.21/slf4j-jdk14-1.7.21.jar). If you are using WebLogic you will need to add 'org.slf4j' to prefer-application-packages in WEB-INF/weblogic.xml Object of class [org.slf4j.impl.JDK14LoggerFactory] must be an instance of class ch.qos.logback.classic.LoggerContext
at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLoggerContext(LogbackLoggingSystem.java:231)
at org.springframework.boot.logging.logback.LogbackLoggingSystem.getLogger(LogbackLoggingSystem.java:223)
at org.springframework.cloud.launcher.deployer.DeployerThread.quiet(DeployerThread.java:90)
at org.springframework.cloud.launcher.deployer.DeployerThread.run(DeployerThread.java:81)

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