( ! ) Warning: Use of undefined constant PHPEXCEL_ROOT - assumed 'PHPEXCEL_ROOT' (this will throw an Error in a future version of PHP) in C:\wamp64\www\19WirelessWarning\phpexcel\Classes\PHPExcel\Shared\trend\linearBestFitClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0002	406504	{main}( )	...\linearBestFitClass.php:0

( ! ) Warning: require_once(PHPEXCEL_ROOTPHPExcel/Shared/trend/bestFitClass.php): failed to open stream: No such file or directory in C:\wamp64\www\19WirelessWarning\phpexcel\Classes\PHPExcel\Shared\trend\linearBestFitClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0002	406504	{main}( )	...\linearBestFitClass.php:0

( ! ) Fatal error: require_once(): Failed opening required 'PHPEXCEL_ROOTPHPExcel/Shared/trend/bestFitClass.php' (include_path='.;C:\php\pear') in C:\wamp64\www\19WirelessWarning\phpexcel\Classes\PHPExcel\Shared\trend\linearBestFitClass.php on line 29
Call Stack
#	Time	Memory	Function	Location
1	0.0002	406504	{main}( )	...\linearBestFitClass.php:0