You need a visa for Indonesia if you have a Democratic Republic of the Congo passport
Visa options for Indonesia
Electronic visitor visa
Travelers need a visa to visit Indonesia for Tourism. An eVisa is the fastest and easiest way of obtaining a visa for Indonesia because travelers can submit their application and supporting documents online. Once the application is approved, travelers receive their eVisa confirmation electronically.
This is not offered by sherpa°.
Apply on the government site.