error logs

i have this errors, please a need a solution:

Warning: include_once(): open_basedir restriction in effect. File(/opt/plesk/php/5.6/share/pear/PEAR5.php) is not within the allowed path(s): (/var/www/vhosts/bolsawallstreet.com/:/tmp/) in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/pear/PEAR.php on line 730

Warning: include_once(/opt/plesk/php/5.6/share/pear/PEAR5.php): failed to open stream: Operation not permitted in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/pear/PEAR.php on line 730

Warning: include_once(): Failed opening ‘PEAR5.php’ for inclusion (include_path=’.:/opt/plesk/php/5.6/share/pear’) in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/pear/PEAR.php on line 730

Warning: require_once(): open_basedir restriction in effect. File(/opt/plesk/php/5.6/share/pear/XML/Util.php) is not within the allowed path(s): (/var/www/vhosts/bolsawallstreet.com/:/tmp/) in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/Serializer.php on line 63

Warning: require_once(/opt/plesk/php/5.6/share/pear/XML/Util.php): failed to open stream: Operation not permitted in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/Serializer.php on line 63

Fatal error: require_once(): Failed opening required ‘XML/Util.php’ (include_path=’.:/opt/plesk/php/5.6/share/pear’) in /var/www/vhosts/bolsawallstreet.com/httpdocs/invertirenempresas/wp-content/themes/fundingpress/funding/lib/PayPal/Serializer/Serializer.php on line 63