I rarely start sigil from the command line, thus I wouldn't see this type of messages normally, but this time I did.
Code:
Debug: Javascript error: QWebEnginePage::ErrorMessageLevel "Uncaught ReferenceError: $ is not defined on line:1 Source:file:///tmp/Sigil-fgkcwC/OEBPS/Text/SVG_img2-962x1500.xhtml"
Line 1 is "<?xml version="1.0" encoding="utf-8"?>", exactly as all other first lines in the .xhtml-files.
What is this?
(Qt 5.12.3, Linux Mint 19.1)