Getting ActionController::UnknownFormat error

Here's what the whole error says below:

ContactController#index is missing a template for this request format and variant. request.formats: ["text/html"] request.variant: [] NOTE! For XHR/Ajax or API requests, this action would normally respond with 204 No Content: an empty white screen. Since you're loading it in a web browser, we assume that you expected to actually render a template, not nothing, so we're showing an error to be extra-clear. If you expect 204 No Content, carry on. That's what you'll get from an XHR or API request. Give it a shot.

I'm just trying to connect my contact_controller.rb file to the contact.html.erb view in my rails portfolio. Not exactly sure what code you might need to see. The homepage html code is this below. Specifically when I change the contact me link to what it is now instead of Contact Me

    <div class="hero-effect">
  <div class="topnav">
    <ul class="menu">
      <li>
        <%= link_to 'Projects', projects_path, class: 'nav-link' %>
      </li>
      <li>
        <%= link_to 'About me', about_index_path, class: 'nav-link' %>
      </li>
    </ul>
  </div>
  <div class="hero-text">
    <h1>Kyle Williamson</h1>
    <h2>Web Developer</h2>
    <button>
      <%= link_to 'Contact me', contact_index_path, class: 'nav-link', %>
    </button>
  </div>
</div>

<div class="about">
  <div class="about-text">

  </div>
</div>