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#announcements
Title
# announcements
c

careful-horse-53996

05/17/2023, 8:53 AM
Hello, i'm testing the GrowthBook SDK for Javascript/React. We're encountering a weird issue with the
trackingCallback
that, for a user, isn't being called (it works for two other people). We've created a feature, enabled it, added an Experiment Rule which splits traffic 50/50, splits by id. What am I missing? Screenshots attached in this thread.
image.png
image.png
FYI @blue-agent-15067
f

fresh-football-47124

05/17/2023, 11:05 AM
one of the ways this can happen, is if the attribute you’re hashing by isn’t set
(id)
how are you checking that the tracking callback is not being called?
b

blue-agent-15067

05/17/2023, 11:07 AM
Hi @fresh-football-47124 so basically, I am looking through the Chrome extension and seems that is running correctly, but looking through the console I can't see the log message "Experiment Viewed" that we set up to debug it
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fresh-football-47124

05/17/2023, 11:11 AM
can you share the code or dm me if you’re not comfortable sharing?
c

careful-horse-53996

05/17/2023, 12:37 PM
@fresh-football-47124 thank you, i've sent you a DM
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