Hi I have updated my wordpress site manually, now i get below mentioned error in the front and backend.
Notice: register_sidebar was called incorrectly. No id was set in the arguments array for the "Main Sidebar" sidebar. Defaulting to "sidebar-1". Manually set the id to "sidebar-1" to silence this notice and keep existing sidebar content. Please see Debugging in WordPress for more information. (This message was added in version 4.2.0.)
Can anyone help?