Invalid occurrence count encountered.
#4005 Compile-time error or run-time catchable error
Invalid occurrence count encountered.
Additional Information
The minimum occurrence value must be greater than or equal to 0, but is
X.
or
The maximum value must be greater than or equal to 0, but is X.
or
The first value is X; the second value is Y, but must be at least as
large as the first.
Explanation
This error message appears when a negative value is given as the
number of times a pattern should be matched. Also, when a range is
specified, ( match some pattern { value TO value } ), and one or both of
the values is dynamic, this message appears if the second value is less
than the first.