Error after upgrade: java.lang.IllegalStateException: No valid key alias or key present for jwtSecret configuration

Scenario:

After upgrading you're getting java.lang.IllegalStateException: No valid key alias or key present for jwtSecret configuration on server startup:

(ServerService Thread Pool -- 206) 2021-08-03T13:31:40,204 ERROR ContextLoader,ServerService Thread Pool -- 206:313 - Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jrioForwardingFilter' defined in ServletContext resource [/WEB-INF/applicationContext-jrio-web.xml]: Cannot resolve reference to bean 'jwtTokenProvider' while setting bean property 'tokenProvider'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jwtTokenProvider' defined in ServletContext resource [/WEB-INF/applicationContext-security-jwt.xml]: Cannot create inner bean 'com.jaspersoft.ji.security.jwt.KeystoreJwtKeyFactory#4f93b4ef' of type [com.jaspersoft.ji.security.jwt.KeystoreJwtKeyFactory] while setting bean property 'key'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'com.jaspersoft.ji.security.jwt.KeystoreJwtKeyFactory#4f93b4ef': FactoryBean threw exception on object creation; nested exception is java.lang.IllegalStateException: No valid key alias or key present for jwtSecret configuration.

How to avoid this error?

Solution:

It's not entirely clear why this error happens, it's a very rare one. Should you get it, if you're not using integration with JRIO you can comment 'tokenProvider' property in applicationContext-jrio-web.xml and 'key' property for bean 'jwtTokenProvider' in applicationContext-security-jwt.xml file and restart. The impact of commenting these out is zero unless you're planning to integrate with JRIO.