Fatal error: Uncaught exception 'RuntimeException' with message 'The exit status code '1' says something went wrong: stderr: "Exception in thread "main" java.lang.NullPointerException at org.xhtmlrenderer.swing.NaiveUserAgent.getBinaryResource(NaiveUserAgent.java:228) at org.xhtmlrenderer.pdf.ITextFontResolver.importFontFaces(ITextFontResolver.java:97) at org.xhtmlrenderer.pdf.ITextRenderer.setDocument(ITextRenderer.java:178) at org.xhtmlrenderer.pdf.ITextRenderer.setDocument(ITextRenderer.java:142) at org.xhtmlrenderer.pdf.ITextRenderer.setDocument(ITextRenderer.java:149) at com.spraed.flyingsaucer.PDFGenerator.main(PDFGenerator.java:93) " stdout: "" command: java -Djava.awt.headless=true -jar "/var/www/production/isabel.net/releases/20170628174301/vendor/spraed/pdf-generator-bundle/Spraed/PDFGeneratorBundle/Resources/java/spraed-pdf-generator.jar" --html "/tmp/tmp5dd2a38653acb." --pdf "/tmp/output5dd2a38653a91.pdf" --encoding UTF-8.' in /var/www/production/isabel.net/releases/20170628174301/vendor/spraed/pdf-gener in /var/www/production/isabel.net/releases/20170628174301/app/bootstrap.php.cache on line 3003