laravel SSL certificate problem self signed certificate in certificate chain

This error occurs when the SSL certificate used by your Laravel application is not trusted by the client's browser.

The most common cause of this error is the use of a self-signed SSL certificate. Self-signed certificates are not issued by a trusted third-party certificate authority, which means that the client's browser cannot validate the authenticity of the certificate.

To fix this issue, you can either purchase an SSL certificate from a trusted certificate authority or obtain a free SSL certificate from Let's Encrypt. Alternatively, you can also bypass the SSL verification process by adding the following line of code in your Laravel application before making any HTTPS requests:

$guzzleClient = new \GuzzleHttp\Client(['verify' => false]);

However, it is not recommended to disable SSL verification as it can compromise the security of your application