UwAmp cURL error 60: SSL certificate problem: unable to get local issuer certificate (see http://curl.haxx.se/libcurl/c/libcurl-errors.html)
If you get the above error you may need to specify a certificate file in your PHP.INI which you can download from https://curl.haxx.se/ca/cacert.pem
Once downloaded edit your PHP.INI and set the following
[curl] ; A default value for the CURLOPT_CAINFO option. ; This is required to be an absolute path. curl.cainfo = "C:\uwamp\bin\php\cacert.pem"