Prosze o sprawdzenie, mozna wprowadzic dane, ale generacja sie nie udaje

"Warning: mysql_query(): supplied argument is not a valid MySQL-Link resource in /srv/www/htdocs/web1/html/przelew/druk_pdf.php on line 67

Warning: Cannot modify header information - headers already sent by (output started at /srv/www/htdocs/web1/html/przelew/druk_pdf.php:67) in /srv/www/htdocs/web1/html/przelew/fpdf.php on line 1035
FPDF error: Some data has already been output to browser, can't send PDF file"