"TypeError: Cannot read property 'getBoundingClientRect' of null
    at getBoundingClientRect (mainMP-0.js:3908:17)
    at Object.getAbsoluteTop_0 [as getAbsoluteTop] (mainMP-0.js:3935:10)
    at $getAbsoluteTop (mainMP-0.js:3176:39)
    at $getAbsoluteBottom (mainMP-0.js:3164:10)
    at Object.onWindowScroll_0 [as onWindowScroll] (mainMP-0.js:51406:24)
    at $dispatch_22 (mainMP-0.js:13397:11)
    at Object.dispatch_23 [as dispatch_0] (mainMP-0.js:13419:43)
    at Object.dispatch (mainMP-0.js:5553:8)
    at dispatchEvent_1 (mainMP-0.js:6645:11)
    at $doFire (mainMP-0.js:6697:9)"