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java.nio.charset.IllegalCharsetNameException: "utf-8"	at java.nio.charset.Charset.checkName(Charset.java:284)	at java.nio.charset.Charset.lookup2(Charset.java:458)	at java.nio.charset.Charset.lookup(Charset.java:437)	at java.nio.charset.Charset.forName(Charset.java:502)	at org.springframework.http.MediaType.checkParameters(MediaType.java:300)	at org.springframework.http.MediaType.(MediaType.java:266)	at org.springframework.http.MediaType.parseMediaType(MediaType.java:570)	at org.springframework.http.HttpHeaders.getContentType(HttpHeaders.java:286)	at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:64)	at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:619)	at org.springframework.web.client.RestTemplate$ResponseEntityResponseExtractor.extractData(RestTemplate.java:1)	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:446)	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:401)	at org.springframework.web.client.RestTemplate.getForEntity(RestTemplate.java:221)