An unexpected error occurred.

TypeError: a is not a function
    at sBe (https://teacherworld.org/assets/index-DjvC1e0A.js:1601:403527)
    at W1 (https://teacherworld.org/assets/index-DjvC1e0A.js:48:48840)
    at s2 (https://teacherworld.org/assets/index-DjvC1e0A.js:48:71758)
    at dP (https://teacherworld.org/assets/index-DjvC1e0A.js:48:82225)
    at _P (https://teacherworld.org/assets/index-DjvC1e0A.js:48:118204)
    at vX (https://teacherworld.org/assets/index-DjvC1e0A.js:48:117237)
    at S2 (https://teacherworld.org/assets/index-DjvC1e0A.js:48:117067)
    at EP (https://teacherworld.org/assets/index-DjvC1e0A.js:48:113824)
    at XP (https://teacherworld.org/assets/index-DjvC1e0A.js:48:125784)
    at MessagePort.O (https://teacherworld.org/assets/index-DjvC1e0A.js:25:1621)