unknown traceback

We are having this kind of traceback in our app:

TypeError: Cannot read property 'indexOf' of undefined
1 File "(unknown)" line (unknown) in [anonymous]
2 File "(unknown)" line (unknown) in [anonymous]
3 File "(unknown)" line (unknown) in [anonymous]
4 File "(unknown)" line (unknown) in [anonymous]

We have Rollbar configured to send additional info (user.id, user.email…) and for some ocurrences in this item that info is empty. But, what drew special attention for us, is the low runtime_ms, about 15 miliseconds, so we think that maybe it is related with some expection inside Rollbar code, make sense?

We have also noted these items began to appear at 6th February, date we think it matches with a new version of Rollbar code (v.1.2.0), however we didn’t update rollbar snippet that day but a few days later.

[coryvirok]

Thanks for following up, David.

Which extension was causing this? If I hear about similar issues I’ll let customers know.

[sankalpsans]

We have noticed this on Safari Desktop as well. Based on my experience, “PDF Viewer” seems to be the only common extension amongst all the browsers that have reported this issue.