title: Could not write JSON: No serializer found for class net.i2p.crypto.eddsa.math.ed25519.Ed25519LittleEndianEncoding
body: <p>i try to implement spring web server to a cordapp , but continuously getting same Serialization error.</p>
  
  <pre><code>{
  "timestamp": 1529999846743,
  "status": 500,
  "error": "Internal Server Error",
  "exception": "org.springframework.http.converter.HttpMessageNotWritableException",
  "message": "org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: No serializer found for class net.i2p.crypto.eddsa.math.ed25519.Ed25519LittleEndianEncoding and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS); nested exception is com.fasterxml.jackson.databind.exc.InvalidDefinitionException: No serializer found for class net.i2p.crypto.eddsa.math.ed25519.Ed25519LittleEndianEncoding and no properties discovered to create BeanSerializer (to avoid exception, disable SerializationFeature.FAIL_ON_EMPTY_BEANS) (through reference chain: java.util.ArrayList[0]-&gt;java.util.Collections$SingletonMap[\"state\"]-&gt;java.util.Collections$SingletonMap[\"data\"]-&gt;java.util.LinkedHashMap[\"exitKeys\"]-&gt;java.util.LinkedHashSet[0]-&gt;net.i2p.crypto.eddsa.EdDSAPublicKey[\"params\"]-&gt;net.i2p.crypto.eddsa.spec.EdDSANamedCurveSpec[\"curve\"]-&gt;net.i2p.crypto.eddsa.math.Curve[\"field\"]-&gt;net.i2p.crypto.eddsa.math.Field[\"encoding\"])",
  "path": "/api/obligation/cash"
  </code></pre>
  
  <p>}</p>