You need an ETA for South Korea if you have a Mauritian passport
Visa options for South Korea
Electronic travel authorization
Travellers need a travel authorization to visit South Korea for Business or Tourism. Visa-exempt visitors entering South Korea must obtain an Electronic Travel Authorization (eTA). Travellers can submit the eTA application online. Once the application is approved, travellers receive their eTA confirmation electronically. An eTA is electronically linked to a passport and valid for up to 3 years. If travellers receive a new passport, they must apply for a new eTA. A valid eTA is required to board the flight. If the eTA is expired or doesn’t match the traveller’s passport information, travellers will not be able to board their flight.
This is not offered by sherpa°.
Apply on the government site.