Configuration's constructor requires the refresh token, but this causes error in MWS migration case about selling-partner-api

[RUDIWER]

Anyone knows how to fix this ???

[jlevers]

For now, just pass any value as the lwaRefreshToken configuration parameter -- shouldn't matter what the value is. I'm working on a fix for this, but it won't be released for a while.

[chrismeats]

@jlevers Thank you for the awesome work on this library!
I seem to be having the same issue here. I am unable to use getAuthorizationCode, I get the following error:

Client error: `POST https://api.amazon.com/auth/o2/token` resulted in a `400 Bad Request` response: {"error_description":"The request has an invalid grant parameter : refresh_token","error":"invalid_grant"}

Below is my code snipet if you have any ideas I appreciate it!

            "lwaClientId" => env('LWA_CLIENT_ID'),
            "lwaClientSecret" => env('LWA_CLIENT_SECRET'),
            "lwaRefreshToken" => "NotNeeded",
            "awsAccessKeyId" => env('AMAZON_ACCESS_KEY_ID'),
            "awsSecretAccessKey" => env('AMAZON_SECRET_ACCESS_KEY'),
            "endpoint" => Endpoint::NA,  // or another endpoint from lib/Endpoints.php
            "roleArn" => env('SPAPI_ROLE_ARN'),
        ]);

        $apiInstance = new AuthorizationApi($config);
        $selling_partner_id = "<SellerId>";
        $developer_id = env('AMAZON_DEVELOPER_ID');
        $mws_auth_token = "<MWS AUTH Token.>";

        try {
            $result = $apiInstance->getAuthorizationCode($selling_partner_id, $developer_id, $mws_auth_token);
            dd($result);
        } catch (Exception $e) {
            echo 'Exception when calling AuthorizationApi->getAuthorizationCode: ', $e->getMessage(), PHP_EOL;
        }

[chrismeats]

I also tried with "lwaRefreshToken" => ""
Which gives error:

Client error: `POST https://api.amazon.com/auth/o2/token` resulted in a `400 Bad Request` response: {"error_description":"The request is missing a required parameter : refresh_token","error":"invalid_request"}

[jlevers]

This should be resolved in v3.1.1, which I just released. Sorry that this took a while to get to!

[chrismeats]

@jlevers I am still getting these same error messages on the newest release 4.0.2
if I leave lwaRefreshToken blank I get
{"error_description":"The request is missing a required parameter : refresh_token","error":"invalid_request"}
If I remove lwaRefreshToken from my Configuration then I get
lwaRefreshToken must be specified when calling non-grantless API operations
Here is my config I am using:

$config = new Configuration([
            "lwaClientId"        => env('LWA_CLIENT_ID'),
            "lwaClientSecret"    => env('LWA_CLIENT_SECRET'),
//            "lwaRefreshToken"    => '',
            "awsAccessKeyId"     => env('AMAZON_ACCESS_KEY_ID'),
            "awsSecretAccessKey" => env('AMAZON_SECRET_ACCESS_KEY'),
            "endpoint"           => Endpoint::NA,  // or another endpoint from lib/Endpoints.php
            "roleArn"            => env('SPAPI_ROLE_ARN'),
            "accessToken"        => null,
        ]);

What am I missing here?
Any help is GREATLY appreciated!