Rails 6. SyntaxError: missing ) in parenthetical (UJS)

Hi! I use pagination Pagy gem, and button "More..." (more pages Ajax) not work
index.js.erb

  var colum = document.querySelector("#categories_index");
  var pagin = document.querySelector("#categories_index_paginate");

  colum.innerHTML += ("<%= j render(partial: 'article/posts/post', collection: @posts, cached: true) %>");
  pagin.innerHTML = ("<%= render(partial: 'next_link') %>");

SyntaxError: missing ) in parenthetical

I not use JQuery.

Only "@rails/ujs": "^6.0.0" webpacker.

Rails -v 6.0.0.
Ruby -v 2.6.1

Help! Thanks!!!