nterface Definition: Expression evaluation error at function 'reject' [line 81]: Incorrect number of parameters for function; expected 1 parameters, but found 0 parameters.

a!localVariable(
 local!rtYearDatasubset: if(
    ri!isReviewTab,
    rule!AS_QRYE_getReviewTasks(
      selections: {
        "ReportYear"
      },
      pagingInfo: a!pagingInfo(
        startIndex: 1,
        batchSize: -1,
        sort: a!sortInfo(
          field: "Year",
          ascending: true
        )
      )
    ),
    rule!AS_getTasksData(
      pagingInfo: a!pagingInfo(
        startIndex: 1,
        batchSize: - 1,
        sort: a!sortInfo(field: "c9", ascending: true)
      )
    )
  ),

local!YearArray:if(
    or(
      rule!APN_isEmpty(local!rtYearDatasubset),
      rule!AS_isNullOrEmpty(local!rtYearDatasubset)
    ),
    {},
    
    if(
      ri!isReviewTab,
      tointeger(
        reject(
          fn!isnull,
          union(
            local!rtYearDatasubset.data.Year,
            local!rtYearDatasubset.data.Year,

          )
        )
      ),
      tointeger(
        reject(
          fn!isnull,
          union(
           local!rtYearDatasubset.data.c9,
           local!rtYearDatasubset.data.c9,

          )
        )
      )
    )
  ),

a!sideBySideLayout(
                  items: {
                    a!sideBySideItem(
                      item: a!dropdownField(
                        label:" Year",
                        labelPosition: "COLLAPSED",
                        placeholder: "Year",
                        choiceLabels: local!YearArray,
                        choiceValues: local!YearArray,
                        value:ri!taskYear,
                        saveInto: {
                          ri!taskYear,
                          
                        }
                      )
                    ),
                    a!sideBySideItem(
                      item: a!richTextDisplayField(
                        value: a!richTextIcon(
                          icon: "filter",
                          altText: "Clear  Year",
                          caption: if(
                            rule!AS_isNullOrEmpty(ri!taskYear),
                            "",
                            "Clear  Year"
                          ),
                          link: if(
                            rule!AS_isNullOrEmpty(ri!taskYear),
                            {},
                            a!dynamicLink(
                              value: {},
                              saveInto: a!save(ri!taskYear, {})
                            )
                          ),
                          color: if(
                            rule!AS_isNullOrEmpty(ri!taskYear),
                            "#808080",
                            "ACCENT"
                          ),
                          size: "MEDIUM"
                        ),
                        accessibilityText: "Clear Filter"
                      ),
                      width: "MINIMIZE"
                    )
                  },
        
                
                ))

Its a year filter and it was working but now it started breaking with above stated error.

Any Suggestions?