특정 게시글 thumbnail null error

[hwanam1111]

https://velog.io/@y1andyu/TypeScript-Express-node.js-%EC%84%A4%EC%A0%95%ED%95%98%EA%B8%B0

해당 게시글을 스크롤을 하다 일정 지점에 도착했을 때, 아래 에러가 나오며 http request code는 429 Too Many Requests으로 나옵니다.

확인 부탁드리겠습니다.

TypeError: Cannot read property 'thumbnail' of null at RelatedPostsForGuest.tsx:48 at Array.filter (<anonymous>) at RelatedPostsForGuest.tsx:48 at Object.useMemo (react-dom.production.min.js:167) at useMemo (react.production.min.js:23) at ir (RelatedPostsForGuest.tsx:45) at ha (react-dom.production.min.js:154) at Xa (react-dom.production.min.js:174) at Pu (react-dom.production.min.js:261) at As (react-dom.production.min.js:230) at Cs (react-dom.production.min.js:229) at Os (react-dom.production.min.js:223) at react-dom.production.min.js:121 at t.unstable_runWithPriority (scheduler.production.min.js:18) at Go (react-dom.production.min.js:120) at Zo (react-dom.production.min.js:121) at Jo (react-dom.production.min.js:120) at vs (react-dom.production.min.js:214) at Aa (react-dom.production.min.js:163) at Object.next (QueryData.ts:282) at g (Observable.js:135) at w (Observable.js:179) at e.value (Observable.js:235) at ObservableQuery.ts:701 at Array.forEach (<anonymous>) at w (ObservableQuery.ts:701) at Object.next (ObservableQuery.ts:662) at o (QueryManager.ts:518) at QueryManager.ts:644 at QueryManager.ts:1091 at Set.forEach (<anonymous>) at QueryManager.ts:1087 at Map.forEach (<anonymous>) at e.broadcastQueries (QueryManager.ts:1085) at QueryManager.ts:1237 at Object.next (Observable.js:322) at g (Observable.js:135) at w (Observable.js:179) at e.value (Observable.js:235) at observables.ts:12 at Set.forEach (<anonymous>) at Object.next (observables.ts:12) at g (Observable.js:135) at w (Observable.js:179) at e.value (Observable.js:235) at httpLink.ts:142