LDAP Authentication not working

[naveen-099]

login is not working when the user tries to login with email and password getting the below log message not able to understand

Operation: Search - Base DN: DC=sampledev,DC=local - Filter: (&(objectclass=f)(objectclass=fe)(objectclass=feafecfe)(objectclass=effe)(mail=eeedcccefd)) - Selected: (entryuuid,*) - Time Elapsed: 66.35

when output the user data it prints like below

"sn" => array:2 [▼
"count" => 1
0 => "P"
]
0 => "sn"
"givenname" => array:2 [▼
"count" => 1
0 => "John"
]
1 => "givenname"
"samaccountname" => array:2 [▼
"count" => 1
0 => "TEST1234"
]
2 => "samaccountname"
"mail" => array:2 [▼
"count" => 1
0 => "[email protected]"
]
3 => "mail"
"count" => 4
"dn" => "CN=John P,CN=Users,DC=sampledev,DC=local"
]

in Login Controller coded as below
protected function credentials(Request $request){

    return [
        'mail' => $request->email,
        'password' => $request->password,
    ];
}