Ok I have found some stuff that is odd in that section.
/* <![CDATA[ */
var WofficeAutocomplete = {"url":"https:\/\/sedziapilkarski.pl\/wp-admin\/admin-ajax.php"};
/* ]]> */
or
/* <![CDATA[ */
var wc_address_i18n_params = {"locale":"{\"PL\":{\"postcode_before_city\":true,\"state\":{\"required\":false}},\"default\":{\"first_name\":{\"label\":\"Imi\\u0119\",\"required\":true,\"class\":[\"form-row-first\"]},\"last_name\":{\"label\":\"Nazwisko\",\"required\":true,\"class\":[\"form-row-last\"],\"clear\":true},\"company\":{\"label\":\"Nazwa firmy\",\"class\":[\"form-row-wide\"]},\"country\":{\"type\":\"country\",\"label\":\"Kraj\",\"required\":true,\"class\":[\"form-row-wide\",\"address-field\",\"update_totals_on_change\"]},\"address_1\":{\"label\":\"Adres\",\"placeholder\":\"Ulica\",\"required\":true,\"class\":[\"form-row-wide\",\"address-field\"]},\"address_2\":{\"placeholder\":\"Nr mieszkania, lokalu (opcjonalnie)\",\"class\":[\"form-row-wide\",\"address-field\"],\"required\":false},\"city\":{\"label\":\"Miasto\",\"required\":true,\"class\":[\"form-row-wide\",\"address-field\"]},\"state\":{\"type\":\"state\",\"label\":\"Stan\",\"required\":true,\"class\":[\"form-row-first\",\"address-field\"],\"validate\":[\"state\"]},\"postcode\":{\"label\":\"Kod pocztowy\",\"required\":true,\"class\":[\"form-row-last\",\"address-field\"],\"clear\":true,\"validate\":[\"postcode\"]}}}","locale_fields":"{\"address_1\":\"#billing_address_1_field, #shipping_address_1_field\",\"address_2\":\"#billing_address_2_field, #shipping_address_2_field\",\"state\":\"#billing_state_field, #shipping_state_field, #calc_shipping_state_field\",\"postcode\":\"#billing_postcode_field, #shipping_postcode_field, #calc_shipping_postcode_field\",\"city\":\"#billing_city_field, #shipping_city_field, #calc_shipping_city_field\"}","i18n_required_text":"pole wymagane"};
/* ]]> */
Are those slashes correct? \/ \”
That’s the only weird thing I can find in the output.