Since the upgrade to Debian 10 with tomcat9 (previously Debian 9 with tomcat8) we have problems with moving directories via File.renameTo or rather the underlying java.io.UnixFileSystem.rename. The ...
at io.netty.handler.codec.http.multipart.AbstractMemoryHttpData.renameTo(AbstractMemoryHttpData.java:213) at io.netty.handler.codec.http.multipart.MixedFileUpload ...