PDF Export on Job Listing error message

hi, thanks for this awesome plugin.

the PDF Export option on the job listing brings the following errors

WP: 5.8.1
PHP 8.0
Divi Theme
WP Rocket Caching

Warning: Undefined variable $content in /homepages/32/d334313617/htdocs/wordpress/wp-content/plugins/job-postings/include/class-pdf-export.php on line 406

Warning: Cannot modify header information – headers already sent by (output started at /homepages/32/d334313617/htdocs/wordpress/wp-content/plugins/job-postings/include/class-pdf-export.php:406) in /homepages/32/d334313617/htdocs/wordpress/wp-content/plugins/job-postings/tcpdf/tcpdf.php on line 7709
TCPDF ERROR: Some data has already been output to browser, can’t send PDF file

thanks for your suggestions!

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