For the context, My app allows user to download a PDF report file that contains charts generated by Highcharts, we use wicked_pdf and wkhtmltopdf for this. It worked fine previously using an very old Highcharts(v6), recently we decided to upgrade it to the latest version(v11) and we got several bugs, mostly because wkhtmltopdf doesn't work with new Javascript syntax.
We could manage to fix all the these bugs and able to render the charts on the PDF. but somehow all these charts have a weird border surround them and no matter how we try to configure Highcharts, these borders just do not go away, even though the HTML page still renders these charts without the borders
We use wkthmltopdf to convert the html file to pdf
wkhtmltopdf sample_report.html report.pdf
This is sample_report.html
This is report.pdf
