k6: WARpanic: runtime error: invalid memory address or nil pointer dereference


I'm trying to run a Performance TEst with a tool named K6 (free and open-source load testing tool), my test is about to test a Website Performance, and when I run the Test I got this:

WARN[0029] Request Failed                     
error="Get https://i.ytimg.com/vi/xtee7r5-ztY/hqdefault.jpg?
read tcp> wsarecv: A connection attempt failed because 
the connected party did not properly respond after a period of time, or established 
connection failed because connected host has failed to respond."
WARpanic: runtime error: invalid memory address or nil pointer dereference
[signal 0xc0000005 code=0x0 addr=0x30 pc=0xa48c2c]

The test can be run on the command line with command:

k6 run --out influxdb=http://localhost:8086/VideoRecord_DB D:\Applications\K6-Scripts\VideoRecording.js`

this is the k6 version:

C:\Users\diz>k6 version

k6 v0.26.1 (dev build, go1.13, windows/amd64)

asked on Stack Overflow Mar 22, 2020 by otmann • edited Mar 22, 2020 by otmann

1 Answer


This is likely because of an issue we had with the k6 v0.26.1 builds for Windows. Because of a CI mistake, we built that specific k6 version with an old Go version that had a bug.

We released k6 v0.26.2 specifically to address that: https://github.com/loadimpact/k6/releases/tag/v0.26.2

Please try v0.26.2 and if the problem persists, open a new GitHub issue: https://github.com/loadimpact/k6/issues/new?labels=bug&template=bug_report.md

answered on Stack Overflow Mar 22, 2020 by na--

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