{% load i18n teams_tags query_string %}

<ul class="tabs">
    <li{% if current == "videos" %} class="current" {% endif %}>
        <a href="{% url teams:project_video_list slug=team.slug,project_slug=project.slug %}{% query_string request.GET %}">
            {% trans "Videos" %}
        </a>
    </li>
    {% if team|is_team_member:user %}
        <li{% if current == "tasks" %} class="current" {% endif %}>
            <a href="{% url teams:project_tasks slug=team.slug, project_slug=project.slug %}">
                {% trans "Tasks" %}
            </a>
        </li>

        {% if team|can_view_settings_tab:user %}
            <li{% if current == "settings" %} class="current" {% endif %}>
                <a href="{% url teams:settings_basic slug=team.slug %}">
                    {% trans "Project Settings" %}
                </a>
            </li>
        {% endif %}
    {% endif %}
</ul>

{% load i18n teams_tags query_string %}

<ul class="tabs">
    <li{% if current == "videos" %} class="current" {% endif %}>
        <a href="{% url teams:project_video_list slug=team.slug,project_slug=project.slug %}{% query_string request.GET %}">
            {% trans "Videos" %}
        </a>
    </li>
    {% if team|is_team_member:user %}
        <li{% if current == "tasks" %} class="current" {% endif %}>
            <a href="{% url teams:project_tasks slug=team.slug, project_slug=project.slug %}">
                {% trans "Tasks" %}
            </a>
        </li>

        {% if team|can_view_settings_tab:user %}
            <li{% if current == "settings" %} class="current" {% endif %}>
                <a href="{% url teams:edit_project slug=team.slug project_slug=project.slug %}">
                    {% trans "Project Settings" %}
                </a>
            </li>
        {% endif %}
    {% endif %}
</ul>

Correct URL for project settings tab
Correct URL for project settings tab