Cannot read properties of undefined (reading 'slug')

TypeError: Cannot read properties of undefined (reading 'slug')
    at useCurrentSection (/var/task/netlify/functions/index.js:228907:110)
    at TableOfContents (/var/task/netlify/functions/index.js:228977:26)
    at createComponent (/var/task/netlify/functions/index.js:15186:16)
    at Object.get children [as children] (/var/task/netlify/functions/index.js:229352:11)
    at ssrElement (/var/task/netlify/functions/index.js:15991:72)
    at Dynamic (/var/task/netlify/functions/index.js:16193:14)
    at createComponent (/var/task/netlify/functions/index.js:15186:16)
    at /var/task/netlify/functions/index.js:21431:12
    at createComponent (/var/task/netlify/functions/index.js:15186:16)
    at /var/task/netlify/functions/index.js:23723:10