appsmithorg/appsmith · error · AppsmithPluginException

PLUGIN_EXECUTE_ARGUMENT_ERROR

PLUGIN_EXECUTE_ARGUMENT_ERROR

Error message

Expected a row object, but did not find it.

What it means

Thrown by private getRowObjectFromBody in RowsUpdateMethod (line 251) when body.isArray() is true. This method expects a single JSON object (row), not an array of rows. It is invoked from validateExecutionMethodRequest via objectMapper.readTree(body), so an array-shaped JSON in the 'Rows' field for an Update One Row action triggers it. Note: the code uses AppsmithPluginError.PLUGIN_EXECUTE_ARGUMENT_ERROR directly (PLUGIN_EXECUTE_ARGUMENT_ERROR as the code string, not PE-ARG-5000). Message: EXPECTED_ROW_OBJECT_MESSAGE = "Expected a row object, but did not find it.".

Source

Thrown at app/server/appsmith-plugins/googleSheetsPlugin/src/main/java/com/external/config/RowsUpdateMethod.java:251

                        "majorDimension", "ROWS",
                        "values", List.of(objects))));
    }

    @Override
    public JsonNode transformExecutionResponse(
            JsonNode response, MethodConfig methodConfig, Set<String> userAuthorizedSheetIds) {
        if (response == null) {
            throw new AppsmithPluginException(
                    GSheetsPluginError.QUERY_EXECUTION_FAILED, ErrorMessages.MISSING_VALID_RESPONSE_ERROR_MSG);
        }

        return this.objectMapper.valueToTree(Map.of("message", "Updated sheet successfully!"));
    }

    private RowObject getRowObjectFromBody(JsonNode body) {

        if (body.isArray()) {
            throw new AppsmithPluginException(
                    AppsmithPluginError.PLUGIN_EXECUTE_ARGUMENT_ERROR, ErrorMessages.EXPECTED_ROW_OBJECT_MESSAGE);
        }

        if (body.isEmpty()) {
            throw new AppsmithPluginException(
                    AppsmithPluginError.PLUGIN_EXECUTE_ARGUMENT_ERROR, ErrorMessages.EMPTY_UPDATE_ROW_OBJECT_MESSAGE);
        }

        return new RowObject(this.objectMapper.convertValue(
                        body,
                        TypeFactory.defaultInstance()
                                .constructMapType(LinkedHashMap.class, String.class, String.class)))
                .initialize();
    }

    @Override
    public void replaceMethodConfigTemplate(Map<String, Object> formData, Map<String, String> mappedColumns) {
        String rowObjects = PluginUtils.getTrimmedStringDataValueSafelyFromFormData(formData, FieldName.ROW_OBJECTS);

View on GitHub (pinned to 8cd9021c24)

Solutions

1. For Update Single Row, bind to a single object: {{ JSON.stringify(Table1.selectedRow) }} (no array).
2. If updating many rows, switch the command to the bulk Update Rows action.
3. Coerce an array of length 1 to its first element: {{ JSON.stringify(arr[0]) }}.
4. Pre-validate: JSON.parse(value) returns a non-array object.

Example fix

// Before (array passed to single-row update)
{{ JSON.stringify(Table1.selectedRows) }}

// After (single row)
{{ JSON.stringify(Table1.selectedRow) }}
// or take the first:
{{ JSON.stringify((Table1.selectedRows || [])[0]) }}

function pickRowObject(value) {
  if (Array.isArray(value)) return value.length === 1 ? value[0] : null; // single-row action
  if (value && typeof value === 'object') return value;
  return null;
}
const row = pickRowObject(Table1.selectedRows || Table1.selectedRow);
if (!row) showAlert('Select a single row to update', 'error');
else UpdateRow.run({ rowObjects: JSON.stringify(row) });

function isSingleRowObject(v) {
  return v != null && typeof v === 'object' && !Array.isArray(v);
}

When it happens

Trigger: User put [{...}] (array) in the 'Rows' field of an Update Single Row action instead of {...}; a binding like {{ JSON.stringify(Table1.selectedRows) }} returns an array but the action expects one row.

Common situations: Confusion between 'Update Row' (single object) and 'Bulk Update Rows' (array); selecting multiple table rows then calling the single-row update; reusing a binding from a bulk action.

Related errors

• PE-JSN-4000
• PE-ARG-5000
• PE-ARG-5000
• PE-DSE-5003
• PE-ARG-5000

AI-assisted analysis of appsmithorg/appsmith@8cd9021c24 (2026-08-12). Data as JSON: /api/errors/2aa6c0d0f34df9e3. Report an issue: GitHub.