It was 5.3, but I just changed it to 5.5, and 5.6 does the same thing.
Was running older version of wordpress, but updated to 4.6.1 still has the same error.
Site has very few plugins: Only Updraft, Advanced CSS editor (installed after error was produced for unrelated reasons) and Contact Form 7. None of these should be causing any issues as they’re well maintained, unrelated, and/or minor. All are up to date.
Platform Type Debian (not sure about version number, could poke around more to find it I bet)
PHP Version 5.6
When you say it was related when parsing “underscore html template”, do you mean the bit of html after the closing code in the PHP file? It does seem like that’s the issue as line 181 is a var that’s after the closing php code. Not sure how that works, but it does seem to be the issue.
Perhaps another crack? Maybe I’ll read-up though I’m like 90% lay when it comes to php.