Unity User SSA CL Certificate Error

Unity에서 공공 API를 사용하는 도중 SSA CL Certificate Error와 직면했다. 원인을 찾으려 구글링 하니 다음과 같은 이유들이 나온다. Unity takes trusted issuers from device store, so this error means you have to either install updates on your phone and expect the issuer to be added or manually add the issuers certificate (usually not recommended, since not being trusted by OS usually means the issuer is not trustforthy). The SSL / CA Error..