exact-php-client: Could not connect to Exact: Could not acquire or refresh tokens [http 400]

I have seen some issues about this topic going around tried all possible solution but couldn’t find any solution for the problem. I can’t see what i am doing/is going wrong. This is y connect function

 public function connect($request)
    {
        $connection = new \Picqer\Financials\Exact\Connection();
        $connection->setRedirectUrl(env("EXACT_CALLBACK_URL"));
        $connection->setExactClientId(env("EXACT_CLIENT_ID"));
        $connection->setExactClientSecret(env("EXACT_CLIENT_SECRET"));
    
        // Retrieves authorizationcode from database
        if ($request->session()->has('authorizationcode')) {
            $connection->setAuthorizationCode($request->session()->get('authorizationcode'));
        }
    
        // Retrieves accesstoken from database
        if (getValue('accesstoken')) {
            $connection->setAccessToken(getValue('accesstoken'));
        }
    
        // Retrieves refreshtoken from database
        if (getValue('refreshtoken')) {
            $connection->setRefreshToken(getValue('refreshtoken'));
        }
    
        // Retrieves expires timestamp from database
        if (getValue('expires_in')) {
            $connection->setTokenExpires(getValue('expires_in'));
        }

        // Set callback to save newly generated tokens
        $connection->setTokenUpdateCallback('tokenUpdateCallback');
        // Make the client connect and exxchange tokens
        try {
            $connection->connect();
        } catch (\Exception $e) {
            throw new Exception('Could not connect to Exact: ' . $e->getMessage());
        }
    
        return $connection;
    }

Authorize function

 public function authorize()
    {
        $connection = new Connection();
        $connection->setRedirectUrl(env("EXACT_CALLBACK_URL"));
        $connection->setExactClientId(env("EXACT_CLIENT_ID"));
        $connection->setExactClientSecret(env("EXACT_CLIENT_SECRET"));
        $connection->redirectForAuthorization();
    }

Authorization token check

 if (isset($_GET['code']) && is_null(getValue('authorizationcode'))) {
            setValue('authorizationcode', $_GET['code']);
            $request->session()->put('authorizationcode',$_GET['code']);
        }
        // If we do not have a authorization code, authorize first to setup tokens
        if (!$request->session()->has('authorizationcode')) {
            $exact = new \App\Http\Controllers\ExactOnlineController();
            $exact->authorize();
        }

and the dump of my connection class:

-baseUrl: "https://start.exactonline.nl"
  -apiUrl: "/api/v1"
  -authUrl: "/api/oauth2/auth"
  -tokenUrl: "/api/oauth2/token"
  -exactClientId: "SECRET"
  -exactClientSecret: "SECRET"
  -authorizationCode: "ha1W!IAAAACBP-J0pQ9fA8Z5-KcHLG9KVPpfKFLNQlEMIqouZyAJbwQEAAAE6oJu5PSd87_F33JdNhCT_MaWKfYbZ2nHBFjy-oPOO-t9lllqIw7a-tW_627_B36xfwUkFz5dHHsSUWC_Ox9oAL6c7geEe0n5-UVi ▶"
  -accessToken: null
  -tokenExpires: null
  -refreshToken: null
  -redirectUrl: "http://127.0.0.1:8000/home"
  -division: null
  -client: null
  -tokenUpdateCallback: "tokenUpdateCallback"
  -acquireAccessTokenLockCallback: null
  -acquireAccessTokenUnlockCallback: null
  #middleWares: []
  +nextUrl: null
  #dailyLimit: null
  #dailyLimitRemaining: null
  #dailyLimitReset: null
  #minutelyLimit: null
  #minutelyLimitRemaining: null

As u can see the authorization code is filled in connect function but the access token keeps empty and is throwing this error.

Could not connect to Exact: Could not acquire or refresh tokens [http 400]

Somebody knows a solution?