Youtube Google API Caught Google service Exception 0 message is refresh token must be passed in or set as part of setAccessTokenStack

I am currently facing this problem: once I authorized youtube to access my account and after saving the token in a file called "token.txt," everything runs smoothly until the token expires. My script is not able to refresh the token.

Error

Caught Google service Exception 0 message is refresh token must be passed in or set as part of setAccessTokenStack trace is #0 /home/omqoygue/contest.diamante.live/vendor/google/apiclient/src/Client.php(321): Google\Client->fetchAccessTokenWithRefreshToken(NULL) #1 /home/omqoygue/contest.diamante.live/upload.php(40): Google\Client->refreshToken(NULL) #2 /home/omqoygue/contest.diamante.live/index.php(18): include('/home/omqoygue/...') #3 {main}

This is where the token is created and stored in a file.

if (isset($_SESSION['token'])) {
    $client->setAccessToken($_SESSION['token']);
    $token = json_encode($_SESSION['token']);
    file_put_contents('token.txt', $token);
    foreach ($_SESSION['token'] as $key => $value) {
        echo '<code>'.$key.":".$value."<br>".'</code>';
    }
}

This is the part where the token validity is checked. If it has expired, it should be updated, but this does not happen.

$token = file_get_contents('token.txt');

try {
    // Client init
    $client = new Google_Client();
    $client->setApplicationName($application_name);
    $client->setClientId($client_id);
    $client->setAccessType('offline');
    $client->setAccessToken($token);
    $client->setScopes($scope);
    $client->setClientSecret($client_secret);
    if ($client->getAccessToken()) {
        /**
         * Check to see if our access token has expired. 
         * If so, get a new one and save it to file for future use.
         */
        if ($client->isAccessTokenExpired()) {
            $newToken = json_decode($client->getAccessToken());
            $client->refreshToken($newToken->refreshToken);
            file_put_contents('token.txt', $client->getAccessToken());
        }
    }
}

When the token expires, I have to give permission again to youtube to access my account. I hope someone can help me, I have already checked the other posts on the subject, but they are obsolete.