When I try to print or download an invoice it opens a page with the message:

 

'Whoops, looks like something went wrong.'

 

How can I correct this?

 

Thank you

<p>When I try to print or download an invoice it opens a page with the message:</p><br /> <p> </p><br /> <h1>'Whoops, looks like something went wrong.'</h1><br /> <p> </p><br /> <p>How can I correct this?</p><br /> <p> </p><br /> <p>Thank you</p>

Try this (change php version to installed version):

 

sudo apt install php7.0-gd

<p>Try this (change php version to installed version):</p><br /> <p> </p><br /> <p>sudo apt install php7.0-gd</p>