treeview in sidebar

When I put a treeview within a sidebar nav it does not indent properly, but when the same treeview is located in the page main body it is indented properly. Is there a way to fix this?

here is the sidebar code used in both places:

        <!-- Side navigation links -->
        <div class="treeview border border-0">
          <ul class="mb-1 pl-3 pb-2">
            <li><i class="fas fa-angle-right rotate"></i>
              <span><i class="far fa-envelope-open ic-w mx-1"></i> Facility A</span>
              <ul class="nested">
                <li><i class="fas fa-angle-right rotate"></i>
                  <span><i class="far fa-envelope-open ic-w mx-1"></i> Process 1</span>
                  <ul class="nested">
                    <li><i class="far fa-address-book ic-w mr-1"></i> Process 1 Subgroup 1</li>

                  </ul>
                </li>

                <li><i class="far fa-address-book ic-w mr-1"></i> Process 2</li>

                <li><i class="far fa-address-book ic-w mr-1"></i> Process 3</li>

              </ul>
            </li>

            <li><i class="fas fa-angle-right rotate"></i>
              <span><i class="far fa-envelope-open ic-w mx-1"></i> Facility B</span>
              <ul class="nested">
                <li><i class="far fa-address-book ic-w mr-1"></i> Process 4</li>

                <li><i class="far fa-address-book ic-w mr-1"></i> Process 5</li>

              </ul>
            </li>

          </ul>
        </div>
        <!--/. Side navigation links -->