# Helper cannot be found

**URL:** <https://discuss.emberjs.com/t/helper-cannot-be-found/12366>\
**Category:** Learning Team\
**Created:** [February 2, 2017, 11:14pm UTC](https://discuss.emberjs.com/t/helper-cannot-be-found/12366 "2017-02-02T23:14:52Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![johnnyicon](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/johnnyicon/32/13390_2.png) [@johnnyicon](https://discuss.emberjs.com/u/johnnyicon)\
**Post date:** [February 2, 2017, 11:14pm UTC](https://discuss.emberjs.com/t/helper-cannot-be-found/12366/1 "2017-02-02T23:14:53Z")

</div>

We just started experience this issue on a new developer coming onto our project. So it’s working on all previous developers’ environments, but not on this new one.

This is the error we’re getting in console:

`Uncaught Error: Compile Error: humanDate is not a helper`

It’s being called in an `hbs` template like so:

`<td>{{ humanDate solution.updatedAt }}</td>`

This is what the helper file looks like. It can be found in `myapp/app/helpers/human-date.js`

```
import Ember from 'ember';
import moment from 'moment';

export function humanDate(params) {
  let datetime = params[0];

  if (datetime) {
    return moment(datetime).format('LL');
  } else {
    return '';
  }
}

export default Ember.Helper.helper(humanDate);

```

We were running `2.10.0-beta1`. I just upgraded the app to `2.11.0` hoping that would fix the issue, but it didn’t. We’ve been tinkering away for the last 3-4 hours and I figure now is about time to ask for help.

Any help would be appreciated!

Thanks!

---

<div class="post-metadata">

**Author:** ![locks](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/locks/32/3878_2.png) [@locks](https://discuss.emberjs.com/u/locks)\
**Post date:** [February 2, 2017, 11:27pm UTC](https://discuss.emberjs.com/t/helper-cannot-be-found/12366/2 "2017-02-02T23:27:08Z")

</div>

> [@johnnyicon](#):
>
> \<td\>{{ humanDate solution.updatedAt }}\</td\>

Hi @johnnyicon, helper names need to be dasherized in the template! This should work:

```
<td>{{human-date solution.updatedAt}}</td>

```

---

<div class="post-metadata">

**Author:** ![johnnyicon](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/johnnyicon/32/13390_2.png) [@johnnyicon](https://discuss.emberjs.com/u/johnnyicon)\
**Post date:** [February 2, 2017, 11:37pm UTC](https://discuss.emberjs.com/t/helper-cannot-be-found/12366/3 "2017-02-02T23:37:09Z")

</div>

We’re now getting this…

```
rollbar.js:20 DEPRECATION: When calling `Ember.deprecate` you must provide an `options` hash as the third parameter. `options` should include `id` and `until` properties. [deprecation id: ember-debug.deprecate-options-missing] See http://emberjs.com/deprecations/v2.x/#toc_ember-debug-function-options for more details.
        at logDeprecationStackTrace (http://localhost:4200/assets/vendor.js:21055:19)
        at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:21166:7)
        at raiseOnDeprecation (http://localhost:4200/assets/vendor.js:21085:12)
        at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:21166:7)
        at invoke (http://localhost:4200/assets/vendor.js:21182:7)
        at deprecate (http://localhost:4200/assets/vendor.js:21150:32)
        at deprecate (http://localhost:4200/assets/vendor.js:21127:7)
        at Object.deprecate (http://localhost:4200/assets/vendor.js:32913:37)
        at deprecate (http://localhost:4200/assets/vendor.js:83446:40)

```

Which is followed by:

```
Uncaught RangeError: Maximum call stack size exceeded
    at RegExp.[Symbol.replace] (native)
    at String.replace (native)
    at logDeprecationStackTrace (http://localhost:4200/assets/vendor.js:21065:31)
    at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:21166:7)
    at raiseOnDeprecation (http://localhost:4200/assets/vendor.js:21085:12)
    at HANDLERS.(anonymous function) (http://localhost:4200/assets/vendor.js:21166:7)
    at invoke (http://localhost:4200/assets/vendor.js:21182:7)
    at deprecate (http://localhost:4200/assets/vendor.js:21150:32)
    at deprecate (http://localhost:4200/assets/vendor.js:21127:7)
    at Object.deprecate (http://localhost:4200/assets/vendor.js:32913:37)

```

it appears that deprecation warning was called almost 3000 times!