I got the same error during the base view creation, when I have included the value for the tuple pattern with a provided regular expression having space at the beginning and at the end in the data source configuration.
The issue got resolved when I used the following tuple pattern as mentioned in the pre-requisites of the DEN60EDU0112LAB01 lab and I was able to create the base view without any error.
**\\[(.+)Z\]\t([0-9\.]+)\t([a-zA-Z ]+)\t([^,]+),([0-2]+) \(Apache-Coyote/1.1: (.+)\) size:(.+)**
Hence, I would suggest you to remove the unwanted space at the beginning and end of the provided tuple pattern value and utilize the same value for the tuple pattern as mentioned above.
Also, ensure that the syntax of these regular expressions is the one defined by the Java language. You can also refer to the [documentation](https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html) of the Java class Pattern lists for more information.
Hope this helps!