🚨 Error: undefined is not an object (evaluating 'a.querySelectorAll')

[ampprojectbot]

Details

Error report: link
First seen: Dec 1, 2020
Frequency: ~ 232/day

Stacktrace

Error: undefined is not an object (evaluating 'a.querySelectorAll')
    at querySelectorAll (extensions/amp-next-page/1.0/service.js:709:18)
    at extensions/amp-next-page/1.0/service.js:365:12
    at extensions/amp-next-page/1.0/service.js:541:6
    at relativePos (extensions/amp-next-page/1.0/visibility-observer.js:310:29)
    at topSentinelPositionChanged_ (extensions/amp-next-page/1.0/visibility-observer.js:93:4)
    at position (src/service/position-observer/position-observer-worker.js:109:20)

Notes

@renovate-bot modified extensions/amp-next-page/1.0/service.js:709-709 in #27350 (Mar 30, 2020)
@renovate-bot modified extensions/amp-next-page/1.0/service.js:364-365 in #27350 (Mar 30, 2020)
@wassgha modified extensions/amp-next-page/1.0/service.js:540-544 in #26296 (Jan 23, 2020)
@wassgha modified extensions/amp-next-page/1.0/visibility-observer.js:294-381 in #26778 (Apr 9, 2020)
@wassgha modified extensions/amp-next-page/1.0/visibility-observer.js:93-93 in #26778 (Apr 9, 2020)
@zhouyx modified src/service/position-observer/position-observer-worker.js:106-136 in #10813 (Sep 8, 2017)

Seen in:

• 05-07 Control (2136)
• 05-07 Stable (2136)
• 05-15 Beta (0310)
• 05-15 Experiment-B (0310)
• 05-15 Experimental (0310)
• +3 more

Possible assignees: @wassgha, @zhouyx

/cc @ampproject/release-on-duty

[caroqliu]

Dedupe with #34487