org.wso2.carbon.apimgt.gateway.handlers.security.APISecurityException: Error while accessing backend services for API key validation

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    WSO2 API Manager - API authentication failure - Required OAuth credentials not provided

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    org.wso2.carbon.apimgt.gateway.handlers.security.APISecurityException: Required OAuth credentials not provided

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.wso2.carbon.apimgt.gateway.handlers.security.keys.APIKeyValidatorClient.toTemplates()
    2. org.wso2.carbon
      APIAuthenticationHandler.handleRequest
      1. org.wso2.carbon.apimgt.gateway.handlers.security.keys.APIKeyValidatorClient.toTemplates(APIKeyValidatorClient.java:193)
      2. org.wso2.carbon.apimgt.gateway.handlers.security.keys.APIKeyValidatorClient.getAllURITemplates(APIKeyValidatorClient.java:166)
      3. org.wso2.carbon.apimgt.gateway.handlers.security.keys.WSAPIKeyDataStore.getAllURITemplates(WSAPIKeyDataStore.java:75)
      4. org.wso2.carbon.apimgt.gateway.handlers.security.APIKeyValidator.getAllURITemplates(APIKeyValidator.java:635)
      5. org.wso2.carbon.apimgt.gateway.handlers.security.APIKeyValidator.doGetAPIInfo(APIKeyValidator.java:487)
      6. org.wso2.carbon.apimgt.gateway.handlers.security.APIKeyValidator.findMatchingVerb(APIKeyValidator.java:459)
      7. org.wso2.carbon.apimgt.gateway.handlers.security.APIKeyValidator.getResourceAuthenticationScheme(APIKeyValidator.java:251)
      8. org.wso2.carbon.apimgt.gateway.handlers.security.oauth.OAuthAuthenticator.authenticate(OAuthAuthenticator.java:119)
      9. org.wso2.carbon.apimgt.gateway.handlers.security.APIAuthenticationHandler.handleRequest(APIAuthenticationHandler.java:117)
      9 frames
    3. Apache Synapse - Core
      SynapseMessageReceiver.receive
      1. org.apache.synapse.rest.API.process(API.java:325)
      2. org.apache.synapse.rest.RESTRequestHandler.dispatchToAPI(RESTRequestHandler.java:90)
      3. org.apache.synapse.rest.RESTRequestHandler.process(RESTRequestHandler.java:69)
      4. org.apache.synapse.core.axis2.Axis2SynapseEnvironment.injectMessage(Axis2SynapseEnvironment.java:300)
      5. org.apache.synapse.core.axis2.SynapseMessageReceiver.receive(SynapseMessageReceiver.java:75)
      5 frames
    4. org.apache.axis2
      AxisEngine.receive
      1. org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:180)
      1 frame
    5. org.apache.synapse
      ServerWorker.run
      1. org.apache.synapse.transport.passthru.ServerWorker.processNonEntityEnclosingRESTHandler(ServerWorker.java:319)
      2. org.apache.synapse.transport.passthru.ServerWorker.run(ServerWorker.java:152)
      2 frames
    6. Apache Axis2 - Transport - Base
      NativeWorkerPool$1.run
      1. org.apache.axis2.transport.base.threads.NativeWorkerPool$1.run(NativeWorkerPool.java:172)
      1 frame
    7. Java RT
      Thread.run
      1. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      2. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      3. java.lang.Thread.run(Thread.java:745)
      3 frames