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Why do I get following errors to execute script in internet explorer :

1. org.openqa.selenium.WebDriverException: Returned value cannot be converted to WebElement: {stacktrace=, error=invalid session id, message=session null does not exist}

2. Caused by: java.lang.ClassCastException: com.google.common.collect.Maps$TransformedEntriesMap cannot be cast to org.openqa.selenium.WebElement 
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    Share your script as well, not just the error messages. – Bence Kaulics Dec 8 '18 at 11:17
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This is probably a mismatch between the browser version and Selenium.

https://stackoverflow.com/a/51023244

Also, IE requires additional configuration.

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