( ! ) Notice: Use of undefined constant PHPEXCEL_ROOT - assumed 'PHPEXCEL_ROOT' in F:\konplast\xampp\htdocs\gkp_dataset\api\PHPExcel\Shared\trend\trendClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0004	157144	{main}( )	..\trendClass.php:0

( ! ) Warning: require_once(PHPEXCEL_ROOTPHPExcel/Shared/trend/linearBestFitClass.php): failed to open stream: No such file or directory in F:\konplast\xampp\htdocs\gkp_dataset\api\PHPExcel\Shared\trend\trendClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0004	157144	{main}( )	..\trendClass.php:0

( ! ) Fatal error: require_once(): Failed opening required 'PHPEXCEL_ROOTPHPExcel/Shared/trend/linearBestFitClass.php' (include_path='.;F:\konplast\xampp\php\PEAR') in F:\konplast\xampp\htdocs\gkp_dataset\api\PHPExcel\Shared\trend\trendClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0004	157144	{main}( )	..\trendClass.php:0