Error: "Cannot read property 'duration' of undefined"

[sebmarkbage]

Describe what you were doing when the bug occurred:

Profiled the new FB. Scrolled down to tail loads.

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Please do not remove the text below this line

DevTools version: 4.6.0-a2fb84beb

Call stack: at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:345591
at Array.map ()
at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:345397
at Ai (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:62580)
at zl (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:112694)
at jc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104789)
at Oc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104717)
at Tc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:104585)
at gc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:101042)
at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:32:47376

Component stack: at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:344679
at div
at div
at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:194307)
at div
at Cc (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:346311)
at div
at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:3:8163)
at div
at bc
at div
at div
at div
at Do (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:262081)
at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:364048
at n (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:274563)
at chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:277138
at div
at div
at ol (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:323458)
at Ze (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:205764)
at pn (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:215038)
at $a (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:292153)
at ws (chrome-extension://dnjnjgbfilfphmojnmhliehogmojhclc/build/main.js:40:369231)

[bvaughn]

Possible duplicate of #18798.

[Amine-H]

I can work on this issue.

[bvaughn]

Fixed via #18862