Sometimes, while working on development environment in Laravel project, we might face with the error like:
GuzzleHttp\Exception\RequestException cURL error 60: SSL certificate problem: unable to get local issuer certificate
while using third party services like Mailgun, Postmark or any others.
As you might know, these services are using Guzzle API and to fix the issue above is just put the next params to a specific service in
'mailgun' => [ ... 'guzzle' => [ 'verify' => false, ], ]