index invalid

Hi when am trying to click on any button it is giving this error

even am able to print the data correctly 

here is the code 

 a!buttonWidget(
          label: cons!CR_APP_BUTTON_LABELS_FOR_CCC_USER[1],
          submit: true(),
          validate: false,
          value: cons!CR_APP_BUTTON_LABELS_FOR_CCC_USER[1],
          saveInto: {
            ri!buttonAction_txt,
            a!save(
              ri!nextAssignee_txt,
              local!crModuleStatusHistoryForLastCC_cdt.addedBy_txt
            ),
            a!save(
              ri!moduleStatus_txt,
              rule!CR_APP_FN_getNTBModuleStatus(
                inputUser_txt:local!crModuleStatusHistoryForLastCC_cdt.addedBy_txt
              )
            ),
            a!save(
              local!moduleRecommendationStatus_cdt,
              updatedictionary(
                local!moduleRecommendationStatus_cdt,
                {
                  approverRole_txt: rule!CR_APP_FN_getUserRole(
                    inputUser_txt: local!crModuleStatusHistoryForLastCC_cdt.addedBy_txt
                  ),
                  addedBy_txt: loggedInUser(),
                  moduleStatus_txt: cons!CR_APP_NTB_MODULE_STATUS[3],
                  buttonAction_txt: ri!buttonAction_txt,
                  updatedBy_txt: loggedInUser(),
                  updatedOn_dt: now(),
                  submittedOn_dt: now()
                }
              )
            ),
            a!save(
              ri!moduleRecommendationStatus_cdt,
              local!moduleRecommendationStatus_cdt
            ),
            a!save(
              local!crModuleStatus_cdt,
              updatedictionary(
                local!crModuleStatus_cdt,
                {
                  duOwner_txt: ri!nextAssignee_txt,
                  moduleStatus_txt: ri!moduleStatus_txt,
                  updatedOn_dt: now(),
                  updatedBy_txt: loggedInUser(),
                  updatedByRole_txt: rule!CR_APP_FN_getUserRole(
                    loggedInUser()
                  )
                }
              )
            ),
            a!save(
              local!crModuleStatus_cdt,
              updatedictionary(
                local!crModuleStatus_cdt,
                rule!CR_APP_FN_updateApprovedFlagsInModuleStatus(
                  buttonAction_txt: ri!buttonAction_txt
                )
              )
            ),
            a!save(
              ri!crModuleStatus_cdt,
              local!crModuleStatus_cdt
            )
          }
        ),