Liquibase unable to change type of column

Support
#1

As liquibase has it’s secrets how it wants to work, by default I disable it.

Now I have a MultiPolygon field where I cannot enter more then 255 characters …

So I enable Liquibase
image

I am searching all liquibase files, to find the text conGuidContact → nothing found

In application.properties I add
logging.level.liquibase=DEBUG

I cannot find any log file (nor any console)

I create the file /src/main/resources/logback.xml

<configuration>
	<appender name="FILE" class="ch.qos.logback.core.FileAppender">
		<file>logs/liquibase-debug.log</file>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %logger{36} - %msg%n</pattern>
		</encoder>
	</appender>

	<logger name="liquibase" level="DEBUG">
		<appender-ref ref="FILE" />
	</logger>

	<root level="INFO">
		<appender-ref ref="FILE" />
	</root>
</configuration>

Still no information as there is no file created.

It seems, Liquibase has a problem to create the XML File. Where do I find the information, what liquibase is not able to change ??

Regards

Felix