net.sf.json.JSONException: A JSONObject text must begin with '{' at character 0 of at net.sf.json.util.JSONTokener.syntaxError(JSONTokener.java:499) at net.sf.json.JSONObject._fromJSONTokener(JSONObject.java:919) at net.sf.json.JSONObject._fromString(JSONObject.java:1145) at net.sf.json.JSONObject.fromObject(JSONObject.java:162) at net.sf.json.JSONObject.fromObject(JSONObject.java:132) at org.jenkinsci.plugins.docker.commons.credentials.DockerRegistryToken$1.call(DockerRegistryToken.java:91) at org.jenkinsci.plugins.docker.commons.credentials.DockerRegistryToken$1.call(DockerRegistryToken.java:71) at hudson.remoting.LocalChannel.call(LocalChannel.java:45) at org.jenkinsci.plugins.docker.commons.credentials.DockerRegistryToken.newKeyMaterialFactory(DockerRegistryToken.java:71) at org.jenkinsci.plugins.docker.commons.credentials.DockerRegistryEndpoint.newKeyMaterialFactory(DockerRegistryEndpoint.java:204) at org.jenkinsci.plugins.docker.commons.credentials.DockerRegistryEndpoint.newKeyMaterialFactory(DockerRegistryEndpoint.java:193) at com.cloudbees.dockerpublish.DockerBuilder$Perform.executeCmd(DockerBuilder.java:458) at com.cloudbees.dockerpublish.DockerBuilder$Perform.executeCmd(DockerBuilder.java:434) at com.cloudbees.dockerpublish.DockerBuilder$Perform.buildAndTag(DockerBuilder.java:376) at com.cloudbees.dockerpublish.DockerBuilder$Perform.exec(DockerBuilder.java:311) at com.cloudbees.dockerpublish.DockerBuilder$Perform.access$100(DockerBuilder.java:291) at com.cloudbees.dockerpublish.DockerBuilder.perform(DockerBuilder.java:262) at hudson.tasks.BuildStepMonitor$1.perform(BuildStepMonitor.java:20) at hudson.model.AbstractBuild$AbstractBuildExecution.perform(AbstractBuild.java:779) at hudson.model.Build$BuildExecution.build(Build.java:205) at hudson.model.Build$BuildExecution.doRun(Build.java:162) at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:534) at hudson.model.Run.execute(Run.java:1720) at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43) at hudson.model.ResourceController.execute(ResourceController.java:98) at hudson.model.Executor.run(Executor.java:404) Build step 'Docker Build and Publish' marked build as failure