minerva upgrade from 16.4 issue

dbconfig-common: flushing administrative password
mv: cannot stat '/var/lib/tomcat9/webapps/map_images/*': No such file or directory
dpkg: error processing package minerva (--configure):
 installed minerva package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 minerva
needrestart is being skipped since dpkg has failed
E: Sub-process /usr/bin/dpkg returned an error code (1)