Update here, I can access and edit the menu through "Appearance › Customize › Menu" however just trying to access through the "Appearance › Menu" (which is the preferred way to do this) throws the "Error message: Attempt to assign property "posts_page" on null."
If this was my site I could live with this but because it's a clients site and there will be many different hands on deck I definitely need to address this issue.
Comments
Update here, I can access and edit the menu through "Appearance › Customize › Menu" however just trying to access through the "Appearance › Menu" (which is the preferred way to do this) throws the "Error message: Attempt to assign property "posts_page" on null."
If this was my site I could live with this but because it's a clients site and there will be many different hands on deck I definitely need to address this issue.
Hello,
I have activated another theme (Twenty Twenty) on your website for testing, and the same happens.
It means that it is not Betheme related issue.
I suggest deactivating all the plugins you have to check if one of them does not cause this problem and if this will not help, reinstall WP.
Best regards