500 Cannot read properties of undefined (reading 'title')

TypeError: Cannot read properties of undefined (reading 'title')
    at Cn (worker.mjs:2804:16)
    at cc (worker.mjs:2799:40)
    at worker.mjs:2911:38
    at async Promise.all (index 0)
    at async zr (worker.mjs:2366:14)
    at async yc (worker.mjs:2362:271)
    at async Je3 (worker.mjs:15231:3)
    at async worker.mjs:15700:17