JWT Token - No installed provider supports this key

I'm trying to create a JWT token with your library

// Create the Claims, which will be the content of the JWT
    JwtClaims claims = new JwtClaims();
    claims.setIssuer("xxxxxxxxxxxxxxxxxxx"); 
    claims.setAudience("xxxxxxxxxxxxxxxxxxx"); // to whom the token is intended to be sent
    claims.setExpirationTimeMinutesInTheFuture(60); //60 minutes from now
    claims.setGeneratedJwtId(); // a unique identifier for the token
    claims.setIssuedAtToNow();  // when the token was issued/created (now)
    claims.setNotBeforeMinutesInThePast(1); // time before which the token is not yet valid (2 minutes ago)
    claims.setSubject("xxxxxxxxx"); // the subject/principal is whom the token is about
    // A JWT is a JWS and/or a JWE with JSON claims as the payload.
    // In this example it is a JWS so we create a JsonWebSignature object.
    JsonWebSignature jws = new JsonWebSignature();
    jws.setPayload(claims.toJson());
    jws.setKey(rsaJsonWebKey.getPrivateKey());

    // Set the Key ID (kid) header because it's just the polite thing to do.
    // We only have one key in this example but a using a Key ID helps
    // facilitate a smooth key rollover process
    //jws.setKeyIdHeaderValue(rsaJsonWebKey.getKeyId());

    jws.setHeader("typ", "JWT");
    // Set the signature algorithm on the JWT/JWS that will integrity protect the claims


    jws.setAlgorithmHeaderValue(AlgorithmIdentifiers.HMAC_SHA256);  // this causes throws  exception here

but am getting this error:

org.jose4j.lang.InvalidKeyException: Key is not valid for HmacSHA256
    at org.jose4j.mac.MacUtil.initMacWithKey(MacUtil.java:61)
    at org.jose4j.mac.MacUtil.getInitializedMac(MacUtil.java:37)
    at org.jose4j.jws.HmacUsingShaAlgorithm.getMacInstance(HmacUsingShaAlgorithm.java:67)
    at org.jose4j.jws.HmacUsingShaAlgorithm.sign(HmacUsingShaAlgorithm.java:61)
    at org.jose4j.jws.JsonWebSignature.sign(JsonWebSignature.java:85)
    at org.jose4j.jws.JsonWebSignature.getCompactSerialization(JsonWebSignature.java:72)
    at com.worldpay.riskservice.TokenHelper.build(TokenHelper.java:45)
    at com.worldpay.riskservice.MainVerticle.lambda$start$0(MainVerticle.java:22)
    at io.vertx.ext.web.impl.RouteImpl.handleContext(RouteImpl.java:221)
    at io.vertx.ext.web.impl.RoutingContextImplBase.iterateNext(RoutingContextImplBase.java:78)
    at io.vertx.ext.web.impl.RoutingContextImpl.next(RoutingContextImpl.java:93)
    at io.vertx.ext.web.handler.impl.BodyHandlerImpl$BHandler.doEnd(BodyHandlerImpl.java:155)
    at io.vertx.ext.web.handler.impl.BodyHandlerImpl$BHandler.end(BodyHandlerImpl.java:141)
    at io.vertx.ext.web.handler.impl.BodyHandlerImpl.lambda$handle$34(BodyHandlerImpl.java:61)
    at io.vertx.core.http.impl.HttpServerRequestImpl.handleEnd(HttpServerRequestImpl.java:406)
    at io.vertx.core.http.impl.ServerConnection.handleEnd(ServerConnection.java:286)
    at io.vertx.core.http.impl.ServerConnection.processMessage(ServerConnection.java:404)
    at io.vertx.core.http.impl.ServerConnection.handleMessage(ServerConnection.java:134)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:514)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:420)
    at io.vertx.core.http.impl.VertxHttpHandler.lambda$channelRead$18(VertxHttpHandler.java:80)
    at io.vertx.core.impl.ContextImpl.lambda$wrapTask$16(ContextImpl.java:333)
    at io.vertx.core.impl.ContextImpl.executeFromIO(ContextImpl.java:225)
    at io.vertx.core.http.impl.VertxHttpHandler.channelRead(VertxHttpHandler.java:80)
    at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:124)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:276)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:263)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.security.InvalidKeyException: No installed provider supports this key: sun.security.rsa.RSAPrivateCrtKeyImpl
    at javax.crypto.Mac.chooseProvider(Mac.java:376)
    at javax.crypto.Mac.init(Mac.java:415)
    at org.jose4j.mac.MacUtil.initMacWithKey(MacUtil.java:57)
    ... 38 more

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