Hi,

Update the code inside models > invoice_stock.py

inside the button action 'action_stock_move'

Update the code as follows after creating picking

def action_stock_move(self):
    if not self.picking_type_id:
        raise UserError(_(
            " Please select a picking type"))
    for order in self:
        if not self.invoice_picking_id:
            pick = {}
            if self.picking_type_id.code == 'outgoing':
                pick = {
                    'picking_type_id': self.picking_type_id.id,
                    'partner_id': self.partner_id.id,
                    'origin': self.name,
                    'location_dest_id': self.partner_id.property_stock_customer.id,
                    'location_id': self.picking_type_id.default_location_src_id.id,
                    'move_type': 'direct'
                }
            if self.picking_type_id.code == 'incoming':
                pick = {
                    'picking_type_id': self.picking_type_id.id,
                    'partner_id': self.partner_id.id,
                    'origin': self.name,
                    'location_dest_id': self.picking_type_id.default_location_dest_id.id,
                    'location_id': self.partner_id.property_stock_supplier.id,
                    'move_type': 'direct'
                }
            picking = self.env['stock.picking'].create(pick)

            self.invoice_picking_id = picking.id
            self.picking_count = len(picking)
            moves = order.invoice_line_ids.filtered(
                lambda r: r.product_id.type in ['product', 'consu'])._create_stock_moves(picking)
            move_ids = moves._action_confirm()
            move_ids._action_assign()
            if picking.state == 'draft':
                picking.action_confirm()
                if picking.state != 'assigned':
                    picking.action_assign()
                    if picking.state != 'assigned':
                        raise UserError(
                            _("Could not reserve all requested products. Please use the \
                                       'Mark as Todo\
                                       ' button to handle the reservation manually."))
            for move in picking.move_ids.filtered(
                    lambda m: m.state not in ['done', 'cancel']):
                for move_line in move.move_line_ids:
                    move_line.qty_done = move.product_uom_qty
            picking.state = 'done'

Regards