我出现了下面的报错，怎么解决？
log:
2023-10-18 16:59:47,250 ERROR o.a.j.u.BeanShellInterpreter: Error invoking bsh method: eval In file: inline evaluation of: ``import com.example.aes; String body1 = vars.get("body") aes aes1 = new aes("1 . . . '' Encountered "aes" at line 6, column 1.
2023-10-18 16:59:47,250 WARN o.a.j.e.BeanShellPostProcessor: Problem in BeanShell script: org.apache.jorphan.util.JMeterException: Error invoking bsh method: eval In file: inline evaluation of: ``import com.example.aes; String body1 = vars.get("body") aes aes1 = new aes("1 . . . '' Encountered "aes" at line 6, column 1.
我的BeanShell后置：
import com.example.aes;
String body1 = vars.get("body")
aes aes1 = new aes("1c825711d84ab48f6b881f55a040da83");
String enString = aes1.encryptBase64(body1);
System.out.println("测试:" + body1);
vars.put("enString",enString);
