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Fatal error: Uncaught Exception: FPDF error: Some data has already been output, can't send PDF file (output started at /home/zestreal/public_html/wp-content/themes/zest/pdf-download.php:77) in /home/zestreal/public_html/wp-content/themes/zest/pdf/fpdf.php:271 Stack trace: #0 /home/zestreal/public_html/wp-content/themes/zest/pdf/fpdf.php(1064): FPDF->Error('Some data has a...') #1 /home/zestreal/public_html/wp-content/themes/zest/pdf/fpdf.php(1001): FPDF->_checkoutput() #2 /home/zestreal/public_html/wp-content/themes/zest/pdf-download.php(308): FPDF->Output() #3 {main} thrown in /home/zestreal/public_html/wp-content/themes/zest/pdf/fpdf.php on line 271