See Encoding Compatibility between SAS/CONNECT Client and Server Sessions
"To successfully use SAS/CONNECT programming services, the encodings of the client and server sessions must be compatible.... If one session is using UTF-8 and the other session has an unknown, or unsupported, encoding, an error occurs and the connection is not made."
It appears that your SAS session encoding (Korean euc-kr) is not compatible with the server encoding (UTF-8). If you have the ability to start your local SAS session using UTF-8 encoding, you should try that.
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