Can't upload data in any format

How to reproduce the behaviour

Create a new project for text classification. Try to upload a dataset test.jsonl with the next lines:

{"text": "Terrible customer service.", "labels": ["negative"], "meta": {"wikiPageID": 1}}
{"text": "Really great transaction.", "labels": ["positive"], "meta": {"wikiPageID": 2}}
{"text": "Great price.", "labels": ["positive"], "meta": {"wikiPageID": 3}}

File is in UTF-8. Get error "The file could not be uploaded. Maybe invalid format. Please check available formats carefully. "

My Environment

• Operating System: CentOS 7
• Python Version Used: 2.7.5 (Host)
• When you install doccano: 9.04.2020
• How did you install doccano: docker-compose

[jganseman]

I had this problem uploading a plain text file with only 10 lines of text in a freshly installed pip version of Doccano (1.2.2, running Django 3.1.7). The problem disappeared when I removed the empty newlines from the end of the file!

[D0C2005]

Indeed, removing the empty newlines (regardless of their position) did the trick. Thanks for the suggestion!

I had this problem uploading a plain text file with only 10 lines of text in a freshly installed pip version of Doccano (1.2.2, running Django 3.1.7). The problem disappeared when I removed the empty newlines from the end of the file!