Liquid error: Object reference not set to an instance of an object.

[Rupinder]

Hi,

I had working power pages site and tabs from my site disappeared over the weekend without any changes and receives error" Liquid error: Object reference not set to an instance of an object." I have multiple non-prod environments and issue is across all environments. I can go to individual pages using page URL path, login, sign in, profile etc are also missing, I am not sure if this is related to a release by Microsoft. This site was created using blank template. Just to test it I have created new site using a template from gallery and its working fine. I am not sure if some one else experience the same issue recently. 

please see attached source code for web template Header and appreciate if someone can assist 

[MoonYoo]

hello，have you ever solve this problem？ I have the same questions，navigation not worked  with 【Liquid error: Object reference not set to an instance of an object.】

[Inogic]

Based on our understanding you're getting an error" Liquid error: Object reference not set to an instance of an object."
error typically occurs when the Liquid code is trying to access a property or object that doesn't exist or is not set.

You can find the updated code in the attachment below.

Thanks!

Inogic Professional Service Division

An expert technical extension for your techno-functional business needs

Power Platform/Dynamics 365 CRM

Drop an email at crm@inogic.com

Service:  http://www.inogic.com/services/ 

Power Platform/Dynamics 365 CRM Tips and Tricks:  http://www.inogic.com/blog/

[Rupinder]

hi @Inogic , 

Thanks for your help and I have tried above Header Source Code, still same error.

[OliverRodrigues]

Did you try beautify/indent the code using a code editor feature? sometimes this breaks the Liquid

Also, can you check that all SiteMarkers in your Header code are available in the Portal Management area?

[MoonYoo]

I tried to change the source code , but it's still not work...

now, I'm try to change the header in the Web Link Sets or other properties

[MoonYoo]

I tried to change the source code , but it's still not work...

now, I'm try to change the header in the Web Link Sets or other properties

[Rupinder]

Hi @OliverRodrigues, 

I have not beautify/indent the code. Code was generated when I created/configured the site. I have multiple environments and no changes was made to any of those environments and suddenly seen this behaviour over the weekend 30/03/2023. I have checked the site makers and all seems fine. Can you please check the Header Code again and see if you can spot anything?

Is there any other area/files i should check?

Thanks

[aduqueofi]

I am having the same problem with one of my portals. I haven't made any modifications for more than two weeks and since last Friday the same error appeared:
"Liquid error: Object reference not set to an instance of an object."
So far I have been able to check that all the snippets are available, as well as the settings, so I don't know what the liquid is referring to with the error.

[OliverRodrigues]

Can you try the below code:

{% assign defaultlang = settings['LanguageLocale/Code'] | default: 'en-us' %}
{% assign homeurl = website.adx_partialurl %}
<div class=' navbar-expand-xl navbar navbar-dark static-top' role='banner'>
  <div class='skip-to-content'>
    <a href='#mainContent'>{{ resx.Skip_To_Content | default: 'Skip to main content' }}</a>
  </div>
  <div class='container'>
      <div id="loading" style="display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); z-index: 9999; justify-content: center; align-items: center;">
    <div class="spinner-border text-primary" style="width: 4rem; height: 4rem;" role="status">
      <span class="visually-hidden">Loading...</span>
    </div>
  </div>
    <div class=' d-xs-block d-sm-block d-md-block d-lg-block navbar-brand navbar-header'>
      {% editable snippets 'Mobile Header' type: 'html' %}
    </div>
    <button type='button' class='navbar-toggler collapsed' title='{{ snippets["Header/Toggle Navigation"] | default: resx['Toggle_Navigation'] | h }}' data-bs-toggle='collapse' data-bs-target='#navbar' aria-expanded='false' onclick='setHeight();'>
      <span class='visually-hidden'>{{ snippets['Header/Toggle Navigation'] | default: resx.Toggle_Navigation | h }}</span>
      <span class='navbar-toggler-icon'></span>
    </button>

    <div id='navbar' class='navbar-collapse collapse' style="width: min-content;">
      {% assign primary_nav = weblinks.Default %}
      {% if primary_nav %}
        <nav aria-label='{{ resx.Main_Navigation | default: "Main Navigation" }}' class='ms-auto menu-bar {% if primary_nav.editable %}xrm-entity xrm-editable-adx_weblinkset{% endif %}' data-weblinks-maxdepth='2'>
          <ul class='nav navbar-nav weblinks'>
            {% for link in primary_nav.weblinks %}
              {% unless forloop.first %}
                <li class=' nav-item divider-vertical' aria-hidden='true'></li>
              {% endunless %}
              {% if link.display_page_child_links %}
                {% if link.url != null %}
                  {% assign sublinks = sitemap[link.url].children %}
                {% endif %}
              {% else %}
                {% assign sublinks = link.weblinks %}
              {% endif %}
              <li class=' nav-item weblink {% if sublinks.size > 0 %} dropdown{% endif %}'>
                <a
                  aria-label='{{ link.name | escape }}'
                  {% if sublinks.size > 0 -%}
                    href='#' role='button' class='dropdown-toggle' data-bs-toggle='dropdown'
                  {%- else -%}
                    href='{{ link.url | escape }}' aria-roledescription='link'
                  {%- endif -%}
                  {%- if link.Open_In_New_Window %}
                    target='_blank'
                  {% endif -%}
                  {%- if link.nofollow %}
                    rel='nofollow'
                  {% endif -%}
                  {%- if link.tooltip %}
                    title='{{ link.tooltip | escape }}'
                  {% endif %}
                >
                  {%- if link.image -%}
                    {%- if link.image.url -%}
                      {%- if link.image.url.first == '.' -%}
                        <span class='{{ link.image.url | split:'.' | join }}' aria-hidden='true'></span>
                      {%- endif -%}
                    {%- else -%}
                      <img
                        src='{{ link.image.url | escape }}'
                        alt='{{ link.image.alternate_text | default:link.tooltip | escape }}'
                        {% if link.image.width %}
                          width='{{ link.image.width | escape }}'
                        {% endif %}
                        {% if link.image.height %}
                          height='{{ link.image.height | escape }}'
                        {% endif %}
                      >
                    {%- endif -%}
                  {%- endif -%}
                  {%- unless link.display_image_only -%}
                    {{ link.name | escape }}
                  {%- endunless -%}
                  {%- if sublinks.size > 0 -%}
                    <span class='caret'></span>
                  {%- endif -%}
                </a>
                {% if sublinks.size > 0 %}
                  <ul class='dropdown-menu dropdown-menu-end'>
                    {% if link.name %}
                      <li>
                        <a
                          aria-label='{{ link.name | escape }}'
                          class='dropdown-item'
                          aria-roledescription='link'
                          href='{{ link.url }}'
                          {% if link.Open_In_New_Window %}
                            target='_blank'
                          {% endif %}
                          {% if link.nofollow %}
                            rel='nofollow'
                          {% endif %}
                          {% if link.tooltip %}
                            title='{{ link.tooltip | escape }}'
                          {% endif %}
                        >
                          {{- link.name | escape -}}
                        </a>
                      </li>
                      <div class='dropdown-divider'></div>
                    {% endif %}
                    {% for sublink in sublinks %}
                      <li>
                        <a
                          class="dropdown-item"
                          aria-label='{{ sublink.name | default:sublink.title | escape }}'
                          aria-roledescription='link'
                          href='{{ sublink.url }}'
                          {% if sublink.Open_In_New_Window %}
                            target='_blank'
                          {% endif %}
                          {% if sublink.nofollow %}
                            rel='nofollow'
                          {% endif %}
                          {% if sublink.tooltip %}
                            title='{{ sublink.tooltip | escape }}'
                          {% endif %}
                        >
                          {{ sublink.name | default: sublink.title | escape }}
                        </a>
                      </li>
                    {% endfor %}
                  </ul>
                {% endif %}
              </li>
            {% endfor %}
            {% assign search_enabled = settings['Search/Enabled'] | boolean | default: true %}
            {% if search_enabled %}
              <li class=' nav-item divider-vertical' aria-hidden='true'></li>
              <li class=' nav-item dropdown'>
                <a id='search' class=' nav-link navbar-icon' href='#' data-bs-toggle='dropdown' role='button' aria-expanded='false' aria-label='{{ snippets["Header/Search/ToolTip"] | default:resx["Search_DefaultText"] | escape }}'>
                  <span class='glyphicon fa-solid fa-magnifying-glass'></span>
                </a>
                <div class='dropdown-menu dropdown-search dropdown-menu-end'>
                  {% include 'Search', search_id: 'q' %}
                </div>
              </li>
            {% endif %}
            <li class=' nav-item divider-vertical' aria-hidden='true'></li>
            {% if website.languages.size > 1 %}
              <li class=' nav-item dropdown'>
                <a class=' nav-link dropdown-toggle' aria-roledescription='link' href='#' data-bs-toggle='dropdown' aria-label='{{ website.selected_language.name | escape }}' aria-haspopup='true' aria-expanded='false' title='{{ website.selected_language.name | escape }}'>
                  <span class='drop_language'>{{ website.selected_language.name | escape }}</span>
                  <span class='caret'></span>
                </a>
                {% include 'Languages Dropdown' %}
              </li>
              <li class=' nav-item divider-vertical' aria-hidden='true'></li>
            {% endif %}
            {% if user %}
              <li class=' nav-item dropdown'>
                {% assign username = user.fullname | escape %}
                <a href='#' class=' nav-link dropdown-toggle' aria-roledescription='link' title='{{username | default: resx['Default_Profile_name'] }}' data-bs-toggle='dropdown' role='button' aria-expanded='false'>
                  <span class='username'>{{ username | default: resx.Default_Profile_name }}</span>
                  <span class='caret'></span>
                </a>
                <ul class='dropdown-menu dropdown-menu-end'>
                  {% assign show_profile_nav = settings['Header/ShowAllProfileNavigationLinks'] | boolean | default: true %}
                  {% if show_profile_nav %}
                    {% assign profile_nav = weblinks['Profile Navigation'] %}
                    {% if profile_nav %}
                      {% for link in profile_nav.weblinks %}
                        <li>
                          <a class="dropdown-item"  aria-label='{{ link.name | escape }}' aria-roledescription='link' href='{{ link.url | escape }}' title='{{ link.name | escape }}'>{{ link.name | escape }}</a>
                        </li>
                      {% endfor %}
                    {% endif %}
                  {% else %}
                    <li>
                      <a class="dropdown-item"  aria-label='{{ snippets["Profile Link Text"] | default:resx["Profile_Text"] | escape }}' aria-roledescription='link' href='{{ sitemarkers['Profile'].url | escape }}'>{{ snippets['Profile Link Text'] | default: resx.Profile_Text | escape }}</a
                    </li>
                  {% endif %}
                  <li class='dropdown-divider' role='separator' aria-hidden='true'></li>
                  <li>
                    <a class="dropdown-item"  aria-label='{{ snippets["links/logout"] | default:resx["Sign_Out"] | escape }}' aria-roledescription='link' href='{% if homeurl%}/{{ homeurl }}{% endif %}{{ website.sign_out_url_substitution }}' title='{{ snippets["links/logout"] | default:resx["Sign_Out"] | escape }}'>
                      {{ snippets['links/logout'] | default: resx.Sign_Out | escape }}
                    </a>
                  </li>
                </ul>
              </li>
            {% else %}
              <li class="nav-item">
                <a class="nav-link" aria-label='{{ snippets["links/login"] | default:resx["Sign_In"] | escape }}' aria-roledescription='link' href='{% if homeurl%}/{{ homeurl }}{% endif %}{{ website.sign_in_url_substitution }}'>
                  {{ snippets['links/login'] | default: resx.Sign_In | escape }}
                </a>
              </li>
            {% endif %}
          </ul>
          {% editable primary_nav %}
        </nav>
      {% endif %}
    </div>
  </div>
</div>
{% substitution %}
{% assign current_page = page.id %}
{% assign sr_page = sitemarkers.Search.id %}
{% assign forum_page = sitemarkers.Forums.id %}
{% if current_page %}
  {% if current_page == sr_page or current_page == forum_page %}
    {% assign section_class = 'section-landing-search' %}
    {% if current_page == forum_page %}
      {% assign section_class = 'section-landing-forums' %}
    {% endif %}
    <section class='page_section {{ section_class | h }} color-inverse'>
      <div class='row sectionBlockLayout sectionFixedStyle' style='display: flex; flex-wrap: wrap; text-align: center;'>
        <div class='container' style='display: flex; flex-wrap: wrap;'>
          <div class='col-lg-12 columnBlockLayout' style='display: flex; flex-direction: column; justify-content: center;'>
            {% if current_page == sr_page %}
              <h1 id='mainContent'>{% editable snippets 'Search/Title' default: resx["Discover_Contoso"] %}</h1>
              {% include 'Search', search_id: 'search_control' %}
            {% endif %}
          </div>
        </div>
      </div>
    </section>
  {% endif %}
{% endif %}
{% endsubstitution %}
<script type='text/javascript'>
  window.onload = function () {
    if (window.navigator.appName == 'Microsoft Internet Explorer' || window.navigator.userAgent.indexOf('Trident') > 0) {
      var searchElement = document.getElementById('search');
      if (searchElement != null) searchElement.setAttribute('href', '');
    }
  };
  function setHeight() {
    var windowHeight = window.innerHeight - 140;
    var navbar = document.getElementById('navbar');
    if (navbar) {
      navbar.style.maxHeight = windowHeight + 'px';
    }
  }
  window.addEventListener('resize', function (event) {
    setHeight();
  });
</script>