## System

* Version: <!-- geckodriver version -->
* Platform: <!-- e.g. Linux/macOS/Windows + version -->
* IceCat: <!-- from the about dialogue -->
* Selenium: <!-- client + version -->


## Testcase

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to be reproduced.
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## Stacktrace

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Error and stacktrace produced by client.
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## Trace-level log

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See https://searchfox.org/mozilla-central/source/testing/geckodriver/doc/TraceLogs.md
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