If .json file is not ok, you will not be able to upload translation file back to station.
Most common mistakes:
The key name must be in quotation marks "Charging_Stop:” and not as "Charging_Stop:
\n it means new line will be added, but be carefeul not to use \N which is not ok. Also \n\ is not ok.
When you finish translation, use this online tool to validate .json file: https://jsonlint.com/