Cannot Input Payment

I’m having an issue with my install where when I try entering a client payment - either the full balance or even a partial - I get the following error:

The amount must be less than {$invoice->balance}

That message appears under the amount field.

Any assistance is appreciated.

This has been fixed in our latest release.

You can manually fix it by changing the single quotes to double quotes in the following line in app/Http/Requests/CreatePaymentRequest.php

        'amount' => 'required|less_than:{$invoice->balance}|positive',


        'amount' => "required|less_than:{$invoice->balance}|positive",