TypeError: Cannot read properties of null (reading 'map')
    at https://2bprep.com/assets/GrammarTest-CLvrC6Xy.js:1:10481
    at Array.map (<anonymous>)
    at es (https://2bprep.com/assets/GrammarTest-CLvrC6Xy.js:1:9596)
    at td (https://2bprep.com/assets/index-DDxRmA1N.js:25:48105)
    at Sd (https://2bprep.com/assets/index-DDxRmA1N.js:25:70905)
    at Jh (https://2bprep.com/assets/index-DDxRmA1N.js:25:81237)
    at Ry (https://2bprep.com/assets/index-DDxRmA1N.js:25:117015)
    at hE (https://2bprep.com/assets/index-DDxRmA1N.js:25:116061)
    at Vd (https://2bprep.com/assets/index-DDxRmA1N.js:25:115893)
    at _y (https://2bprep.com/assets/index-DDxRmA1N.js:25:112686)