Unable to upload assets

I am trying to upload a binary with in git action using https://github.com/alexellis/upload-assets . Here is the snippet of where I call it.

```yaml
- name: Prepare executables for uploading
run: |
mkdir executables
# mv target/production/node-template executables/node-template
mv target/debug/foo executables/foo

- name: Upload node template executables to assets
uses: alexellis/upload-assets@0.3.0
env:
GITHUB_TOKEN: ${{ github.token }}
with:
asset_paths: '["executables/*"]'
```

Unfortunately , I get the error:

```bash
Run alexellis/upload-assets@0.3.0
Error: Not Found
```

I would appreciate any pointers on resolving this , as I can't understand why it can't find the binary