It seems you have no menu selected.
In the Manage location screen select an existing menu and Save changes. If there is none, click on “Use new menu”.
Then you should be able to edit it in the Edit Menus screen.
See the Codex article on Menu Screens
and the one on wp_nav_menu
Related Posts:
- Add custom menu item using wp_nav_menu_items filter
- Removing link ” from ” menu for some “links” without JS
- Using filters to change href of nav menu page link
- How to get a different mobile menu than desktop menu in the twentytwelve child theme
- How to add menu to Dashboard that can be viewed by all users
- Links open only on new tab or window
- How to get current page menu item name instead of full menu item list
- Adding different classes to anchor in navigation menu
- Pending Custom Link in Menu
- Force PDF download from custom menu?
- TwentyTwelve child theme mobile menu not working
- Page-Linking Structure
- How to add wechat (weixin) link to navigation menu?
- Admin only menu/page
- Image as a link using wp_nav_menu()
- Link that refers to a menu item with dynamically generated URL
- Fragment URL in navigation item without a custom link
- Link to Homepage in Menu
- Separator for custom nav menu
- How do you link to a place in another page without any styling issues?
- ‘Users’ and ‘Appearance’ have disappeared from dashboard menu [closed]
- Custom Links menu items include in Search Results
- Menu custom link not working for external site
- Why is wordpress forcing https link generation?
- Links do not open from click, only in new tab [closed]
- Adding existing links to custom navigation menus?
- Switch from hover to click on Twenty Twelve Menu
- Use wp_logout_url() in menu creation page
- In the Admin Dashboard, can I choose which sections to display?
- Is it possible to add a dynamic link in the main navigation in a child theme
- magic “MENU” button under Twenty Twelve theme
- how to remove description from menu buttons?
- WP admin style not refreshing
- How to change the link on the logo at the menu?
- Creating Menu Links in a Custom Theme
- The cart, checkout, and shop links not getting removed
- URL links consistent with menus?
- Menu page with three columns
- Opening Menu link in another tab
- Active class to current link
- How to add class to anchor using wp_nav_menu
- Simple form to add custom links to menu?
- Main menu navigation links and new pages
- custom menu widget where menu title is a link
- 2 item in a same menu pointing to 1 page
- How to show pages in menu without link
- Problem with links once in portfolio item
- How to create a link-less parent (top level) menu item that doesn’t use an anchor tag
- Trying to add Newline in Menu item
- Menu links URL with PHP GET method
- Is it possible to remove the highlighted menu on Users and highlight a different menu?
- How do i make a custom top level dashboard menu item available for all users?
- Classes CSS (Optional) – how do I reference this in php?
- Why does WordPress convert absolute URLs to relative URLs for menu items?
- Parent link need to go first child submenu
- Add a data attribute to list item element in menu
- Links in new menu don’t work
- How to make menu output links absolute
- Menu Structure with Links failure to update
- List of WordPress menu item indices?
- Top menu link anchor href value change after online server?
- Show content of subdomain from specific menu-item?
- Navigational error
- Create custom page and custom menu
- How to handle change the appearance of ‘categories’ box on dashboard?
- How do I add a link to the menu that has a charector (?) in it?
- TwentyTwelve child theme: Incorrect footer menu
- Remove link from Page name in navigation bar
- collapse twenty twelve submenu in mobile version
- Change menu item order
- Menu System: Custom Links
- Unsual behaviour of navigation Menus
- How to centre menu items on horizontal nav bar? (e.g. make margins equal) [closed]
- Wrapping my ‘s with
- Displaying list of random links using wp_nav_menu
- WordPress removes URL parameters from menu elements when saving the menu
- how to add permalink/slug to wordpress custom link menu item
- Main Menu Hover is Always White
- Render link description in navigation block
- Redirect Issue on a link from the client side
- link a page I created as a under construction and link it to the menu
- Display a portion/ branch of the menu tree using wp_nav_menu()
- Programmatically add a Navigation menu and menu items
- Any docs for wp_nav_menu’s “items_wrap” argument?
- Customizing Only a Specific Menu using the “wp_nav_menu_items” Hook?
- Changing the Order of Admin Menu Sections?
- How make top level menu item not have link, but have sub-menus that are linked?
- Add ‘has_children’ class to parent li when modifying Walker_Nav_Menu
- Get WP Navigation Menu from REST API V2
- How to Hard Code Custom menu items
- How to add a Custom Link to a Menu with a URL that is relative to the blog URL
- How do I remove UL on wp_nav_menu?
- Retrieving a list of menu items in an array
- WordPress default menu in database
- Adding an Arbitrary Link to the Admin Menu?
- Dynamically exclude menu items from wp_nav_menu
- Add “Logout” link to navigation menu
- Error: Declaration of MyClass::start_lvl() should be compatible with that of Walker_Nav_Menu::start_lvl()
- Split up wp_nav_menu with custom walker
- Removing container from wp_nav_menu not working