Apache AuthLDAPURL and ldapsearch - apache

Question

I am trying to correlate what Apache does for the AuthLDAPURL with ldapsearch. I have a setup where I can run an ldapsearch to successfully test a user's credentials, but I cannot seem to translate that to an Apache configuration.
Do you have any ideas on how to emulate what Apache is doing with an LDAP search, or how to create the AuthLDAPURL so it matches the ldapsearch?
This is on Ubuntu 22.04, OpenLDAP (May 12 2022), Apache (2.4.41).
I can do the following ldapsearches to show the user is in the system and the password is correct.
ldapsearch -x -LLL -H ldap://testserver -D "cn=admin,dc=testserver" -W -b "ou=people,dc=testserver" -s children "(&(objectClass=posixAccount)(uid=billy))" dn
Enter LDAP Password:
dn: uid=billy,ou=people,dc=testserver
root#testserver:/home/sysadmin# ldapsearch -x -LLL -H ldap://testserver -D "uid=billy,ou=people,dc=testserver" -W -b "dc=testserver" -s children "(objectClass=*)"
Enter LDAP Password:
<prints tree under dc=testserver>
Here is my Apache configuration:
<Location /svn/>
DAV svn
SVNParentPath /var/svn
SVNListParentPath On
AuthName 'Please use your Testserver account'
AuthType Basic
AuthBasicProvider ldap
AuthLDAPBindDN "cn=admin,dc=testserver"
AuthLDAPBindPassword "password"
# Test the user account
AuthLDAPURL "ldap://testserver:389/ou=people,dc=testserver?uid?sub?(ObjectClass=*)"
require valid-user
</Location>
Here is my LDAP configuration:
dn: ou=people,dc=testserver
objectClass: organizationalUnit
ou: people
dn: ou=groups,dc=testserver
objectClass: organizationalUnit
ou: groups
dn: uid=billy,ou=people,dc=testserver
objectClass: inetOrgPerson
objectClass: posixAccount
objectClass: shadowAccount
cn: Bill
sn: Belichick
userPassword: {SSHA}pr4TabkZcr/ZAtiHBgL6bF1jvuvIJ6dn
loginShell: /bin/bash
uidNumber: 2001
gidNumber: 2001
homeDirectory: /home/bill
dn: ou=svn,ou=groups,dc=testserver
objectClass: organizationalUnit
ou: groups
dn: cn=svn_folder_repo1_rw,ou=svn,ou=groups,dc=testserver
objectClass: groupOfNames
cn: svn_folder_repo1_rw
member: uid=billy,ou=people,dc=testserver
Finally, the Apache error log reports ...
[Thu Aug 11 02:24:04.914162 2022] [auth_basic:error] [pid 4631] [client 192.168.99.1:49323] AH01617: user billy: authentication failure for "/svn/": Password Mismatch
*** --- Edit --- ***
I tried with a non user and got the same message.
[Thu Aug 11 11:43:13.916494 2022] [auth_basic:error] [pid 619] [client 192.168.99.1:60322] AH01617: user eric: authentication failure for "/svn/": Password Mismatch