Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Apr 29 14:58:13 IST 2020.
There was an unexpected error (type=Internal Server Error, status=500). could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
This exception belongs to JPA in spring boot and we can handle the error and exception only, we understand. to resolve the issue check the exception that JPA Query parameter is ok or not. also, check annotation. @query parameter there may be SQL not able to create by the system on run time.