my website is www.viculla.com i add sandbox and all work it should but the live dosent work when i try to purchise i got this error massage
An uncaught Exception was encountered
Type: PayPal\Exception\PayPalConnectionException
Message: Got Http response code 401 when accessing https://api.sandbox.paypal.com/v1/payments/payment/PAY-2R883352A99474017LMYVZPI.
Filename: /home/viculla/public_html/application/libraries/paypal-php-sdk/paypal/rest-api-sdk-php/lib/PayPal/Core/PayPalHttpConnection.php
Line Number: 154
Backtrace:
File: /home/viculla/public_html/application/libraries/paypal-php-sdk/paypal/rest-api-sdk-php/lib/PayPal/Transport/PayPalRestCall.php
Line: 73
Function: execute
File: /home/viculla/public_html/application/libraries/paypal-php-sdk/paypal/rest-api-sdk-php/lib/PayPal/Common/PayPalResourceModel.php
Line: 102
Function: execute
File: /home/viculla/public_html/application/libraries/paypal-php-sdk/paypal/rest-api-sdk-php/lib/PayPal/Api/Payment.php
Line: 589
Function: executeCall
File: /home/viculla/public_html/application/controllers/Paypal.php
Line: 125
Function: get
File: /home/viculla/public_html/index.php
Line: 315
Function: require_once
