Problem:
The problem is because of a pidfile not removed
Solution:
Add the -Dpidfile.path=/dev/null option to the /etc/default/openbeescanocs file
(JAVA_OPTS=”-DOB_CONVERSION_HOME=/usr/share/openbeescanocs -DOCS_HOME=/usr/share/openbeescanocs -DTESSDATA_PREFIX=/usr/local/tesseract-ocr -Dhttps.port=9443 -Dpidfile.path=/dev/null -Dhttp.port=8080 $JAVA_OPTS” )
Stop and start the service.