Why can't I restore a backup from OpenMRS 1.6.3?

I have OpenMRS version 1.6.3, the system crashed and i tried to restore from the backup file. after re-installing the system, i run the restore script and select the backup file. when i run the system, it brings this error;

org.hibernate.exception.SQLGrammarException: could not load an entity: [org.openmrs.Role#Anonymous] Please help

Hopefully you will get an answer soon, but FYI, keep in mind OpenMRS Platform 1.6.x is no longer supported, so if there is a bug, you’ll need to first migrate to a later/supported version.

https://wiki.openmrs.org/pages/viewpage.action?pageId=65602258

@mathiasbbaale, Can you cross check if the Anonymous role exists in the role table.