GuzzleHttp\Exception\RequestException: cURL error 60: SSL certificate problem

1. https://curl.haxx.se/ca/cacert.pem

download cacert.pem file
 
2. php.ini

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo ="C:/wamp64/www/wteam/cacert.pem"

3. restart services : Done
 

( ! ) Fatal error: Uncaught GuzzleHttp\Exception\RequestException: cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) in C:\wamp64\www\wteam\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php on line 201
( ! ) GuzzleHttp\Exception\RequestException: cURL error 60: SSL certificate problem: unable to get local issuer certificate (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) in C:\wamp64\www\wteam\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php on line 201
Call Stack
#	Time	Memory	Function	Location
1	0.0070	367272	{main}( )	...\index.php:0
2	0.0595	528752	AuthController->callback( )	...\index.php:86
3	0.0595	529128	League\OAuth2\Client\Provider\GenericProvider->getAccessToken( )	...\index.php:70
4	0.0710	609440	League\OAuth2\Client\Provider\GenericProvider->getParsedResponse( )	...\AbstractProvider.php:537
5	0.0710	609440	League\OAuth2\Client\Provider\GenericProvider->getResponse( )	...\AbstractProvider.php:621
6	0.0710	609440	GuzzleHttp\Client->send( )	...\AbstractProvider.php:608
7	0.4408	647328	GuzzleHttp\Promise\RejectedPromise->wait( )	...\Client.php:130