Labels crash single product page

I see on the single product page this 2 errors:

SyntaxError: '' string literal contains an unescaped line break extra-relief-2500mg-full-spectrum-hemp-extract:1862:74
ReferenceError: dataLayer is not definedextra-relief-2500mg-full-spectrum-hemp-extract:1981:3

First one is from this part:

if ( $wc_var_desc.length == 0 ) {
                $entry_summary.append( '<div class="woocommerce-variation-
description"></div>' );
            }

It is not from our plugin. I don’t know what it is from as it is outputted inline.
Because of it preloader part is not hidding while the page is working and the label is shown.

Regards,
Dima