@BredovaAs explained by akots, you need
1/ In the searchHighlight.tpl file replace:
line 123: $output = implode("<body>", $body);
by:
$output = implode("<body", $body);
2/ copy / paste the content of this file inside the content of the plugin in the manager
@Paprikas $body = explode("<body", $output); // break out the head
replace with
$body = explode("<body>", $output); // break out the head
This fix the problem, but if you have for instance: <body id="type-b"> the plugin couldn't work.
This is the reason why I have done the change between 1.4 and 1.3 versions.
Apologies for this error, but as I use the
advSearchHighlight.tpl as plugin, I didn't see this error.