abaqus出现这个问题是什么原因？

Error in job Job-z3: THIS KEYWORD IS NOT  AILABLE IN Abaqus/Explicit

Error in job Job-z3: ANALYSIS WILL BE TERMINATED

Job Job-z3: Analysis Input File Processor aborted due to errors.

Error in job Job-z3: Analysis Input File Processor exited with an error.

Job Job-z3 aborted due to errors.