Find and count throw exception if base entry does not exist

[jgomer2001]

Trying to compute the number of fido entries under a user branch, the following is raised:

org.gluu.persist.exception.EntryPersistenceException: Failed to calculate the number of entries with baseDN: ou=fido,inum=A8F2-DE1E.D7FB,ou=people,o=gluu, filter: (&(&(objectClass=organizationalUnit))(&(objectClass=top)(objectClass=organizationalUnit)))
	at org.gluu.persist.ldap.impl.LdapEntryManager.countEntries(LdapEntryManager.java:780) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.impl.LdapEntryManager.countEntries(LdapEntryManager.java:734) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.impl.BaseEntryManager.countEntries(BaseEntryManager.java:191) ~[oxcore-persistence-core-4.0.rc3.jar:?]
      ....
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
Caused by: org.gluu.persist.exception.operation.SearchException: Failed to scroll to specified start
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.searchImpl(LdapOperationsServiceImpl.java:403) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.search(LdapOperationsServiceImpl.java:305) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.impl.LdapEntryManager.countEntries(LdapEntryManager.java:776) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	... 95 more
Caused by: com.unboundid.ldap.sdk.LDAPSearchException: The search base entry 'ou=fido,inum=A8F2-DE1E.D7FB,ou=people,o=gluu' does not exist
	at com.unboundid.ldap.sdk.LDAPConnection.search(LDAPConnection.java:3772) ~[unboundid-ldapsdk-4.0.7.jar:4.0.7]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.searchImpl(LdapOperationsServiceImpl.java:373) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.search(LdapOperationsServiceImpl.java:305) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.impl.LdapEntryManager.countEntries(LdapEntryManager.java:776) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	... 95 more

IMO that should not be an error: when the base of search does not exist, the call should return 0.

About the same applies for find:

org.gluu.persist.exception.EntryPersistenceException: Failed to find entries with baseDN: ou=fido2_register,inum=A8F2-DE1E.D7FB,ou=people,o=gluu, filter: (&(&(objectClass=oxFido2RegistrationEntry))(&(oxStatus=registered)(personInum=A8F2-DE1E.D7FB)))
	at org.gluu.persist.ldap.impl.LdapEntryManager.findEntries(LdapEntryManager.java:441) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.impl.BaseEntryManager.findEntries(BaseEntryManager.java:150) ~[oxcore-persistence-core-4.0.rc3.jar:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_222]
Caused by: org.gluu.persist.exception.operation.SearchException: The search base entry 'ou=fido2_register,inum=A8F2-DE1E.D7FB,ou=people,o=gluu' does not exist
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.searchImpl(LdapOperationsServiceImpl.java:427) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.search(LdapOperationsServiceImpl.java:305) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.impl.LdapEntryManager.findEntries(LdapEntryManager.java:438) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	... 73 more
Caused by: com.unboundid.ldap.sdk.LDAPSearchException: The search base entry 'ou=fido2_register,inum=A8F2-DE1E.D7FB,ou=people,o=gluu' does not exist
	at com.unboundid.ldap.sdk.LDAPConnection.search(LDAPConnection.java:3772) ~[unboundid-ldapsdk-4.0.7.jar:4.0.7]
	at com.unboundid.ldap.sdk.AbstractConnectionPool.search(AbstractConnectionPool.java:2056) ~[unboundid-ldapsdk-4.0.7.jar:4.0.7]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.searchImpl(LdapOperationsServiceImpl.java:425) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.operation.impl.LdapOperationsServiceImpl.search(LdapOperationsServiceImpl.java:305) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	at org.gluu.persist.ldap.impl.LdapEntryManager.findEntries(LdapEntryManager.java:438) ~[oxcore-persistence-ldap-4.0.rc3.jar:?]
	... 73 more