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Wiki page sidebar not showing

I’m getting this error on wiki page website

Failed to load resource: the server responded with a status of 404 (Not Found)
 render_wiki.js:82 Uncaught TypeError: Cannot read properties of undefined (reading 'href')
 at window.RenderWiki.set_nav_buttons (render_wiki.js:82)
 at Object.callback (render_wiki.js:18)
 at Object.200 (website.js:78)
 at i (VM7572 jquery.min.js:2)
 at Object.add [as done] (VM7572 jquery.min.js:2)
 at Object.always (VM7572 jquery.min.js:2)
 at Object.statusCode (VM7572 jquery.min.js:4)
 at z (VM7572 jquery.min.js:4)
 at XMLHttpRequest.<anonymous> (VM7572 jquery.min.js:4)
 octicons.css:1 Failed to load resource: the server responded with a status of 404 (Not Found)