Unexpected Application Error!

Cannot access 'y' before initialization

ReferenceError: Cannot access 'y' before initialization
    at https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:208:8373
    at f3 (https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:40:24296)
    at dx (https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:40:42451)
    at https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:40:40763
    at w (https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:25:1548)
    at MessagePort.k (https://www.qibangbangai.com/assets/index-Bsb2cUpB.js:25:1907)