We have a website (.Net / jquery / Bootstrap 4) using Rollbar to register Javascript errors. Rollbar logs an intermittent Javascript error with the message "Not a product." For tracing, it includes only:
File "(unknown)" line (unknown) col 0 in [anonymous]
The error only occurs on Chrome 60, 61 and 62 on Windows and Mac . Our client information and telemetry do not reveal any browser extensions that may be responsible, but I do not know how to do this. Is there a way to fix this problem, or should we assume that this is a Chrome extension if it does not occur on other clients?
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