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Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/sandelz/public_html/backend-apps/aerothotic/inventory_out_aerothotic/webapp/printpackagingslip.php:34 Stack trace: #0 /home/sandelz/public_html/backend-apps/aerothotic/inventory_out_aerothotic/webapp/printpackagingslip.php(34): mysqli_num_rows(false) #1 /home/sandelz/public_html/backend-apps/aerothotic/inventory_out_aerothotic/webapp/printpackagingslip.php(314): printData() #2 {main} thrown in /home/sandelz/public_html/backend-apps/aerothotic/inventory_out_aerothotic/webapp/printpackagingslip.php on line 34