Use knowage error

[Hello-Linux]

I define a customer server.xml config file,based on your base image, I created a custom image myself, but it failed to start after loading,I curl the 127.0.0.1:8080 500 error
My Dockerfile is:
FROM knowagelabs/knowage-server-docker:6.4.5
LABEL maintainer="Ops for zhongyuan hello_linux@aliyun.com"
ADD server.xml /home/knowage/apache-tomcat-8.5.37/conf/server.xml