Get following error when generate apex class from wsdl file. Could anyone please help provide some insight? Thanks!

 

The following generated class(es) have compilation errors:
Error: inthubCrmserviceWsdl
Error: Dependent class is invalid and needs recompilation:
inthubCrmserviceTypes: line 34, column 18: inthubCrmserviceTypes.IntHubException: Exception class must extend another Exception class at 12:13
 

//Generated by wsdl2apex

public class inthubCrmserviceWsdl {
    public class CrmProcessorPort {
        public String endpoint_x = 'http://dapp1:57050//CRMService';
        public Map<String,String> inputHttpHeaders_x;
        public Map<String,String> outputHttpHeaders_x;
        public String clientCert_x;
        public String clientCertPasswd_x;
        private String[] ns_map_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/wsdl', 'inthubCrmserviceWsdl', 'http://inthub.prod.netsol.com/CRMService/types', 'inthubCrmserviceTypes'};
        public void submitForm(inthubCrmserviceTypes.Credential Credential_1,inthubCrmserviceTypes.FormRequest FormRequest_2) {
            inthubCrmserviceTypes.submitForm request_x = new inthubCrmserviceTypes.submitForm();
            inthubCrmserviceTypes.submitFormResponse response_x;
            request_x.Credential_1 = Credential_1;
            request_x.FormRequest_2 = FormRequest_2;
            Map<String, inthubCrmserviceTypes.submitFormResponse> response_map_x = new Map<String, inthubCrmserviceTypes.submitFormResponse>();
            response_map_x.put('response_x', response_x);
            WebServiceCallout.invoke(
              this,
              request_x,
              response_map_x,
              new String[]{endpoint_x,
              '',
              'http://inthub.prod.netsol.com/CRMService/types',
              'submitForm',
              'http://inthub.prod.netsol.com/CRMService/types',
              'submitFormResponse',
              'inthubCrmserviceTypes.submitFormResponse'}
            );
            response_x = response_map_x.get('response_x');
        }
    }
}

Error: inthubCrmserviceTypes
Error: inthubCrmserviceTypes.IntHubException: Exception class must extend another Exception class at 34:18

//Generated by wsdl2apex

public class inthubCrmserviceTypes {
    public class submitForm {
        public inthubCrmserviceTypes.Credential Credential_1;
        public inthubCrmserviceTypes.FormRequest FormRequest_2;
        private String[] Credential_1_type_info = new String[]{'Credential_1','http://inthub.prod.netsol.com/CRMService/types','Credential','1','1','true'};
        private String[] FormRequest_2_type_info = new String[]{'FormRequest_2','http://inthub.prod.netsol.com/CRMService/types','FormRequest','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'Credential_1','FormRequest_2'};
    }
    public class Credential {
        public String password;
        public String userName;
        private String[] password_type_info = new String[]{'password','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] userName_type_info = new String[]{'userName','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'password','userName'};
    }
    public class FormRequest {
        public String action;
        public String clientRef;
        public inthubCrmserviceTypes.FormData[] formData;
        public String productInstanceId;
        public String webformInstanceId;
        private String[] action_type_info = new String[]{'action','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] clientRef_type_info = new String[]{'clientRef','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] formData_type_info = new String[]{'formData','http://inthub.prod.netsol.com/CRMService/types','FormData','0','-1','true'};
        private String[] productInstanceId_type_info = new String[]{'productInstanceId','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] webformInstanceId_type_info = new String[]{'webformInstanceId','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'action','clientRef','formData','productInstanceId','webformInstanceId'};
    }
    public class IntHubException {
        public Integer errorCode;
        public String vendorErrorCode;
        public String vendorErrorMessage;
        public String message;
        private String[] errorCode_type_info = new String[]{'errorCode','http://www.w3.org/2001/XMLSchema','int','1','1','false'};
        private String[] vendorErrorCode_type_info = new String[]{'vendorErrorCode','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] vendorErrorMessage_type_info = new String[]{'vendorErrorMessage','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] message_type_info = new String[]{'message','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'errorCode','vendorErrorCode','vendorErrorMessage','message'};
    }
    public class submitFormResponse {
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{};
    }
    public class FormData {
        public String answer;
        public String name;
        public String question;
        private String[] answer_type_info = new String[]{'answer','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] name_type_info = new String[]{'name','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] question_type_info = new String[]{'question','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'answer','name','question'};
    }
}

Get following error when generate apex class from wsdl file. Could anyone please help provide some insight? Thanks!

 

The following generated class(es) have compilation errors:
Error: inthubCrmserviceWsdl
Error: Dependent class is invalid and needs recompilation:
inthubCrmserviceTypes: line 34, column 18: inthubCrmserviceTypes.IntHubException: Exception class must extend another Exception class at 12:13
 

//Generated by wsdl2apex

public class inthubCrmserviceWsdl {
    public class CrmProcessorPort {
        public String endpoint_x = 'http://dapp1:57050//CRMService';
        public Map<String,String> inputHttpHeaders_x;
        public Map<String,String> outputHttpHeaders_x;
        public String clientCert_x;
        public String clientCertPasswd_x;
        private String[] ns_map_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/wsdl', 'inthubCrmserviceWsdl', 'http://inthub.prod.netsol.com/CRMService/types', 'inthubCrmserviceTypes'};
        public void submitForm(inthubCrmserviceTypes.Credential Credential_1,inthubCrmserviceTypes.FormRequest FormRequest_2) {
            inthubCrmserviceTypes.submitForm request_x = new inthubCrmserviceTypes.submitForm();
            inthubCrmserviceTypes.submitFormResponse response_x;
            request_x.Credential_1 = Credential_1;
            request_x.FormRequest_2 = FormRequest_2;
            Map<String, inthubCrmserviceTypes.submitFormResponse> response_map_x = new Map<String, inthubCrmserviceTypes.submitFormResponse>();
            response_map_x.put('response_x', response_x);
            WebServiceCallout.invoke(
              this,
              request_x,
              response_map_x,
              new String[]{endpoint_x,
              '',
              'http://inthub.prod.netsol.com/CRMService/types',
              'submitForm',
              'http://inthub.prod.netsol.com/CRMService/types',
              'submitFormResponse',
              'inthubCrmserviceTypes.submitFormResponse'}
            );
            response_x = response_map_x.get('response_x');
        }
    }
}

Error: inthubCrmserviceTypes
Error: inthubCrmserviceTypes.IntHubException: Exception class must extend another Exception class at 34:18

//Generated by wsdl2apex

public class inthubCrmserviceTypes {
    public class submitForm {
        public inthubCrmserviceTypes.Credential Credential_1;
        public inthubCrmserviceTypes.FormRequest FormRequest_2;
        private String[] Credential_1_type_info = new String[]{'Credential_1','http://inthub.prod.netsol.com/CRMService/types','Credential','1','1','true'};
        private String[] FormRequest_2_type_info = new String[]{'FormRequest_2','http://inthub.prod.netsol.com/CRMService/types','FormRequest','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'Credential_1','FormRequest_2'};
    }
    public class Credential {
        public String password;
        public String userName;
        private String[] password_type_info = new String[]{'password','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] userName_type_info = new String[]{'userName','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'password','userName'};
    }
    public class FormRequest {
        public String action;
        public String clientRef;
        public inthubCrmserviceTypes.FormData[] formData;
        public String productInstanceId;
        public String webformInstanceId;
        private String[] action_type_info = new String[]{'action','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] clientRef_type_info = new String[]{'clientRef','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] formData_type_info = new String[]{'formData','http://inthub.prod.netsol.com/CRMService/types','FormData','0','-1','true'};
        private String[] productInstanceId_type_info = new String[]{'productInstanceId','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] webformInstanceId_type_info = new String[]{'webformInstanceId','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'action','clientRef','formData','productInstanceId','webformInstanceId'};
    }
    public class IntHubException {
        public Integer errorCode;
        public String vendorErrorCode;
        public String vendorErrorMessage;
        public String message;
        private String[] errorCode_type_info = new String[]{'errorCode','http://www.w3.org/2001/XMLSchema','int','1','1','false'};
        private String[] vendorErrorCode_type_info = new String[]{'vendorErrorCode','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] vendorErrorMessage_type_info = new String[]{'vendorErrorMessage','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] message_type_info = new String[]{'message','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'errorCode','vendorErrorCode','vendorErrorMessage','message'};
    }
    public class submitFormResponse {
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{};
    }
    public class FormData {
        public String answer;
        public String name;
        public String question;
        private String[] answer_type_info = new String[]{'answer','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] name_type_info = new String[]{'name','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] question_type_info = new String[]{'question','http://www.w3.org/2001/XMLSchema','string','1','1','true'};
        private String[] apex_schema_type_info = new String[]{'http://inthub.prod.netsol.com/CRMService/types','false'};
        private String[] field_order_type_info = new String[]{'answer','name','question'};
    }
}