# FAQ

## I can't upload my data

Please check the following list.

- File encoding: `UTF-8` is appropriate.
- Filename: alphabetic file name is suitable.
- File format selection: File format radio button should be selected properly.
- When you are using JSON/JSONL: Confirm JSON data is valid.
  - You can use [JSONLint](https://jsonlint.com/) or some other tool (when JSONL, pick one data and check it).
- When you are using CSV: Confirm CSV data is valid.
  - You can use Excel or some tools that have import CSV feature. 
- Lack of line: Data file should not contain blank line.
- Lack of field: Data file should not contain blank field.

**You don't need your real & all data to validate file format. The picked data & masked data is suitable if your data is large or secret.**

## I want to add annotators

1. Add a user from [Django Admin site](https://djangobook.com/django-admin-site/).
![Add a user](./images/faq/add_user.png)
2. Add the user to the project in the member page(`/projects/{project_id}/members`).