( ! ) Warning: Use of undefined constant ABSPATH - assumed 'ABSPATH' (this will throw an Error in a future version of PHP) in C:\WebServers\Home\ergo8\www\wp-content\plugins\jetpack\json-endpoints\jetpack\class.jetpack-json-api-plugins-install-endpoint.php on line 5
Call Stack
#	Time	Memory	Function	Location
1	0.2287	6630616	{main}( )	...\class.jetpack-json-api-plugins-install-endpoint.php:0

( ! ) Warning: require_once(ABSPATHwp-admin/includes/class-wp-upgrader.php): failed to open stream: No such file or directory in C:\WebServers\Home\ergo8\www\wp-content\plugins\jetpack\json-endpoints\jetpack\class.jetpack-json-api-plugins-install-endpoint.php on line 5
Call Stack
#	Time	Memory	Function	Location
1	0.2287	6630616	{main}( )	...\class.jetpack-json-api-plugins-install-endpoint.php:0

( ! ) Fatal error: require_once(): Failed opening required 'ABSPATHwp-admin/includes/class-wp-upgrader.php' (include_path='.;C:\php\pear') in C:\WebServers\Home\ergo8\www\wp-content\plugins\jetpack\json-endpoints\jetpack\class.jetpack-json-api-plugins-install-endpoint.php on line 5
Call Stack
#	Time	Memory	Function	Location
1	0.2287	6630616	{main}( )	...\class.jetpack-json-api-plugins-install-endpoint.php:0