Error when publishing new posts

WordPress version 5.9.3
Current theme: GeneratePress (version 3.0.3)
Current plugin: Instant Indexing (version 1.1.13)
PHP version 7.4.1

Error Details
=============
An error of type E_ERROR was caused in line 201 of the file C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php. Error message: Uncaught GuzzleHttp\Exception\RequestException: cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://url5151.findwritersonline.com/ls/click?upn=7dVmhgAclJVdyBcVjVQLv0bsACe-2Bals9jC0Xq76zlNDlPN7gk6f71M-2ByB9KMpjodc90w4NzX9CRYXnVfhveLmQ-3D-3DmdFC_m-2F-2B9xBN6tcakgqmanGfK8-2B77UuWYK7u4OBOmWYZJvzvHw4xxWLmpVmL7NT4jqS9SKUVwFjBNFoaHiIbIbfx0JvNZLKKbHkk6-2F-2FEwlnny9h-2BQAbKmXP7AUaOgUmIJNx1Ter6XFJw8dZEggMFkQb8iyTo9YUX8-2F5YdTBK3nD3kGKJ55jUApH-2Fyc3De2xdWkyKKTpRxGV18-2FN-2BFswycc59Rpfu4r5DMs49vVaBfPftDOnM-3D in C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php:201
Stack trace:
#0 C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php(155): GuzzleHttp\Handler\CurlFactory::createRejection()
#1 C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php(105): GuzzleHttp\Handler\CurlFactory::finishError()
#2 C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Handler\CurlHandler.php(43): GuzzleHttp\Handler\CurlFactory::finish()
#3 C:\inetpub\wwwroot\findwritersonlinecom\main\wp-content\plugins\fast-indexing-api\vendor\guzzlehttp\guzzle\src\Han

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