Trying to install with a fresh db and I am getting this error:

<code>

ParseError: "ValidateError

The field(s) `arch` failed against a constraint: Invalid view definition

 

Error details:

Element '<xpath expr="//form/notebook">' cannot be located in parent view

 

Error context:

View `product.variant.multi.product.template.form`

[view_id: 766, xml_id: n/a, model: product.template, parent_id: 268]" while parsing /opt/odoo/server/addons/product_variant_multi/product_view.xml:197, near

<record id="product_variant_multi_product_template_form_view" model="ir.ui.view">

            <field name="name">product.variant.multi.product.template.form</field>

            <field name="model">product.template</field>

            <field name="inherit_id" ref="product.product_template_form_view"/>

            <field name="arch" type="xml">

                <data><xpath expr="//field[@name='categ_id']/.." position="after">

                    <group>

                        <field name="is_multi_variants"/>

                    </group>

                </xpath>

                <xpath expr="//form/notebook" position="inside">

                    <page string="Variants">

                        <group colspan="1" col="4" attrs="{'invisible':[('is_multi_variants','=',False)]}">

                            <field name="dimension_type_ids" nolabel="1" colspan="4"/>

                            <button name="add_all_option" string="Add All Options" type="object" colspan="2"/>

                            <field name="value_ids" nolabel="1" colspan="4"/>

                            <field name="variant_model_name" colspan="4"/>

                            <field name="variant_model_name_separator" colspan="4"/>

                            <field name="code_generator" colspan="4"/>

                            <field name="variant_track_production" colspan="4"/>

                            <field name="variant_track_incoming" colspan="4"/>

                            <field name="variant_track_outgoing" colspan="4"/>

                            <field name="do_not_generate_new_variant" colspan="4"/>

                            <field name="do_not_update_variant" colspan="4"/>

                            <button name="button_generate_variants" string="Generate / Update Variants" type="object" colspan="4"/>

                        </group>

                        <field name="variant_ids" string="Variants" nolabel="1" colspan="1">

                            <tree string="Variants">

                                <field name="code"/>

                                <field name="name"/>

                                <field name="variants" string="Dimension Values"/>

                            </tree>

                        </field>

                    </page>

                </xpath>

            </data></field>

        </record>

</code>

Does someone know where could be the error? Thank you.