Hi,

Try to use this code , this help to override the default actions

<record id="project.open_view_project_all" model="ir.actions.act_window">

    <field name="name">Projects</field>

<field name="res_model">project.project</field>

            <field name="domain">[]</field>

<field name="view_mode">tree,kanban,form</field>

            <field name="view_id" ref="view_project_kanban"/>

<field name="search_view_id" ref="view_project_project_filter"/>

            <field name="help" type="html">

<p class="o_view_nocontent_smiling_face">

                    No projects found. Let's create one!

                </p>

                <p>

                    Create projects to organize your tasks. Define a different workflow for each project.

                </p>

            </field>

</record>

Hope it helps