Kindly help me to resolve the issue, as m getting some issue with Xls_Reader.java file and getting below error on execution of the script:

[Error] java.lang.Error: Unresolved compilation problems:
CELL_TYPE_STRING cannot be resolved or is not a field
CELL_TYPE_NUMERIC cannot be resolved or is not a field
CELL_TYPE_FORMULA cannot be resolved or is not a field
CELL_TYPE_BLANK cannot be resolved or is not a field