After install a model nothing appear no menu, forms ,  nothing 

although the log showed some error and I fixed and no any error anymore

<?xml version="1.0" encoding="utf-8"?>

<odoo>
    <data>
        <!-- المهام root menus -->
         <!-- Timesheet root menus -->
        <menuitem id="todo_task_menu_root"
            name="Tasks"
            sequence="55"
            web_icon="hr_timesheet,static/description/icon_timesheet.png"/>

        <menuitem id="menu_todo_task_tracking"
            name="tasks"
            parent="todo_task_menu_root"
            sequence="5"/>



       
        <!--
            صف المهام
        -->
        <record id="todo_task_line_tree" model="ir.ui.view">
            <field name="name">tasks</field>
            <field name="model">todo.task</field>
            <field name="arch" type="xml">
                <tree editable="top" string="الانشطة والمهام" import="false">
                    <field name="descr" string="المطلوب عمله"/>
                    <field name="start_date" string="تاريخ"/>
                    <field name="gov_dep" string="الجهة الحكومية"/>
                    <field name="related_party" string="العمل لصالح"/>
                    <field name="deadline_date" string="الحد الاقصي"/>
                    <field name="amount"/>
                    <field name="note"/>
                    <field name="remaining_days" string="الباقي من الايام"/>
                </tree>
            </field>
        </record>
<!--        <record id="view_todo_task_line_pivot" model="ir.ui.view">-->
<!--            <field name="name">todo.task.pivot</field>-->
<!--            <field name="model">todo.task</field>-->
<!--            <field name="arch" type="xml">-->
<!--                <pivot string="قائمة المهام">-->
<!--                    <field name="employee_id" type="row"/>-->
<!--                    <field name="sart_date" interval="month" type="col"/>-->
<!--                    <field name="amount" type="measure" widget="timesheet_uom"/>-->
<!--                </pivot>-->
<!--            </field>-->
<!--        </record>-->

        <record id="todo_task_line_form" model="ir.ui.view">
            <field name="name">todo.task.line.form</field>
            <field name="model">todo.task</field>
            <field name="priority">1</field>
            <!--            <field name="inherit_id" eval="False"/>-->
            <field name="arch" type="xml">
                <form string="tasks">
                    <sheet string="Tasks Entry">

                        <group>
                            <field name="descr" string="المطلوب عمله"/>
                            <field name="start_date" string="تاريخ"/>
                            <field name="gov_dep" string="الجهة الحكومية"/>
                            <field name="related_party" string="العمل لصالح"/>
                            <field name="deadline_date" string="الحد الاقصي"/>
                        </group>
                        <group>
                            <field name="amount"/>
                            <field name="note"/>
                            <field name="remaining_days" string="الباقي من الايام"/>
                        </group>
                    </sheet>
                </form>
            </field>
        </record>
        <record id="todo_task_line_search" model="ir.ui.view">
            <field name="name">todo.tasks.line.search</field>
            <field name="model">todo.task</field>
            <field name="arch" type="xml">
                <search string="tasks">
                        <field name="descr" string="المطلوب عمله"/>
                            <field name="start_date" string="تاريخ"/>
                            <field name="gov_dep" string="الجهة الحكومية"/>
                            <field name="related_party" string="العمل لصالح"/>
                            <field name="deadline_date" string="الحد الاقصي"/>
                    <separator/>
                    <filter name="month" string="Date" date="date"/>
                    <group expand="0" string="Group By">
                        <filter string="Employee" name="groupby_employee" domain="[]" context="{'group_by':'employee_id'}"/>
                        <filter string="related_party" name="groupby_project" domain="[]" context="{'group_by':'related_party'}"/>
                        <filter string="gov_dep" name="groupby_task" domain="[]" context="{'group_by':'gov_dep'}"/>
                        <filter string="deadline" name="groupby_date" domain="[]" context="{'group_by':'deadline_date'}" help="Timesheet by Date"/>
                    </group>
                </search>
            </field>
        </record>

        <record id="act_todo_task_line" model="ir.actions.act_window">
            <field name="name">المهام المطلوبه</field>
            <field name="res_model">todo.task</field>
            <field name="view_mode">tree,form</field>
            <!--            <field name="domain">[('project_id', '!=', False), ('user_id', '=', uid)]</field>-->
            <field name="context">{
                "search_default_week":1,
                }
            </field>
            <field name="search_view_id" ref="todo_task_line_search"/>
            <field name="help" type="html">
                <p class="o_view_nocontent_smiling_face">
                    Record a new activity
                </p>
                <p>
                    تستطيع تسجيل مهامك الموكله اليك هناوفقا للشركه
                </p>
            </field>
        </record>


        <record id="act_todo_task_line_view_tree" model="ir.actions.act_window.view">
            <field name="view_mode">tree</field>
            <field name="sequence" eval="4"/>
            <field name="view_id" ref="todo_task_line_tree"/>
            <field name="act_window_id" ref="act_todo_task_line"/>
        </record>
        <record id="act_todo_task_line_view_form" model="ir.actions.act_window.view">
            <field name="view_mode">form</field>
            <field name="sequence" eval="5"/>
            <field name="view_id" ref="todo_task_line_form"/>
            <field name="act_window_id" ref="act_todo_task_line"/>
        </record>
<!--         <menuitem id="todo_menu_activity_mine"-->
<!--            name="My Tasks"-->
<!--            parent="menu_todo_task_tracking"-->
<!--            action="act_todo_task_line"/>-->

<!--        <menuitem id="menu_todo_task_tracking"-->
<!--                  name="Tasks"-->
<!--                  parent="todo_task_menu_root"/>-->



    </data>
</odoo>