Attempting to search Site Roles in Site Settings results in a Roles is temporarily unavailable error

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, Master
• Fix Version/s: 7.0.0 DXP FP33, 7.0.0 DXP SP7, 7.0.5 CE GA6, 7.0.X, 7.1.X, Master
• Component/s: Sites Administration > Sites, User Management > Roles
• Labels:
  • ee-ts
  • liferay-digital-enterprise-70-sp7
  • liferay-fixpack-de-33-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/52911

Steps to reproduce
1. Start Liferay DXP + DE-32
2. Create user 'UserA' and assign site role Site Administration of default site to the user
3. Login as UserA
4. Go to default Site (Liferay DXP) > Configuration > Site Settings > Advanced
5. Site Roles > click Select
6. input any words in Search

Actual Result
"Roles is temporarily unavailable" error message appears with a stack trace:

com.liferay.portal.kernel.exception.NoSuchGroupException: No Group exists with the primary key 0
	at com.liferay.portal.service.persistence.impl.GroupPersistenceImpl.findByPrimaryKey(GroupPersistenceImpl.java:10925)
	at com.liferay.portal.service.persistence.impl.GroupPersistenceImpl.findByPrimaryKey(GroupPersistenceImpl.java:10941)
	at com.liferay.portal.service.impl.GroupLocalServiceImpl.getGroup(GroupLocalServiceImpl.java:1181)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:163)
	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:54)
	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:58)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.cache.thread.local.ThreadLocalCacheAdvice.invoke(ThreadLocalCacheAdvice.java:67)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:169)
	at com.liferay.portal.service.impl.GroupServiceImpl.getGroup(GroupServiceImpl.java:281)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:163)
	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:54)
	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:58)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:137)
	at com.liferay.portal.spring.aop.ChainableMethodAdvice.invoke(ChainableMethodAdvice.java:56)

Expected Result
Since the user is a Site Administrator, I would think that they should have the roles required to access the portlet.

Reproduced in

• master(fa848ec50d978a6b7a1bd21e4fbaa5c9865ca833)
• branch(b8abc3a4efa759d39593999208cfa90c02d1bc4a)