Discussed in #1068
Originally posted by Ye-Myint-Oo September 16, 2026
Hi i upgraded 1.6.3 and updated logback.xml with JansiConsoleAppender (reference)
application can't start in first place and got the following issue
10:37:38,780 |-ERROR in ch.qos.logback.core.model.processor.AppenderModelHandler - Could not create an Appender of type [ch.qos.logback.core.JansiConsoleAppender]. ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type ch.qos.logback.core.JansiConsoleAppender
at ch.qos.logback.core.util.DynamicClassLoadingException: Failed to instantiate type ch.qos.logback.core.JansiConsoleAppender
at at ch.qos.logback.core.util.OptionHelper.instantiateByClassNameAndParameter(OptionHelper.java:84)
at at ch.qos.logback.core.util.OptionHelper.instantiateByClassName(OptionHelper.java:45)
at at ch.qos.logback.core.util.OptionHelper.instantiateByClassName(OptionHelper.java:34)
at at ch.qos.logback.core.model.processor.AppenderModelHandler.handle(AppenderModelHandler.java:68)
at at ch.qos.logback.core.model.processor.DefaultProcessor.secondPhaseTraverse(DefaultProcessor.java:244)
at at ch.qos.logback.core.model.processor.DefaultProcessor.secondPhaseTraverse(DefaultProcessor.java:256)
at at ch.qos.logback.core.model.processor.DefaultProcessor.traversalLoop(DefaultProcessor.java:88)
it can't create JansiConsoleAppender.
Environment
JDK - 21
Spring boot - 3.5.17
OS - window (development only)
Discussed in #1068
Originally posted by Ye-Myint-Oo September 16, 2026
Hi i upgraded 1.6.3 and updated logback.xml with JansiConsoleAppender (reference)
application can't start in first place and got the following issue
it can't create JansiConsoleAppender.
Environment
JDK - 21
Spring boot - 3.5.17
OS - window (development only)