We cloned this sample project: https://github.com/FusionAuth/fusionauth-example-python-flask
And tried to get it to work against our cloud FusionAuth instance. However, logging in fails, and leads to the following error in the FusionAuth logs. We also tried upgrading the fusionauth-client library to its latest version, but that didn't help. Any idea what we might be doing wrong? We're able to log into this same FusionAuth application using other systems.

2022-09-28 8:58:44.274 PM ERROR org.primeframework.mvc.servlet.PrimeFilter - Error encountered
org.primeframework.mvc.PrimeException: Missing result for action class [class io.fusionauth.app.action.oauth2.TokenAction] URI [/oauth2/token] and result code [not-allowed]
at org.primeframework.mvc.action.result.AbstractForwardResult.locateDefault(AbstractForwardResult.java:161)
at org.primeframework.mvc.action.result.AbstractForwardResult.buildFullyQualifiedPath(AbstractForwardResult.java:122)
at org.primeframework.mvc.action.result.AbstractForwardResult.execute(AbstractForwardResult.java:92)
at org.primeframework.mvc.action.result.DefaultResultInvocationWorkflow.perform(DefaultResultInvocationWorkflow.java:108)
at org.primeframework.mvc.workflow.SubWorkflowChain.continueWorkflow(SubWorkflowChain.java:51)
at org.primeframework.mvc.message.DefaultMessageWorkflow.perform(DefaultMessageWorkflow.java:44)
at org.primeframework.mvc.workflow.SubWorkflowChain.continueWorkflow(SubWorkflowChain.java:51)
at org.primeframework.mvc.scope.DefaultScopeStorageWorkflow.perform(DefaultScopeStorageWorkflow.java:62)
at org.primeframework.mvc.workflow.SubWorkflowChain.continueWorkflow(SubWorkflowChain.java:51)
at org.primeframework.mvc.workflow.DefaultErrorWorkflow.perform(DefaultErrorWorkflow.java:46)
at org.primeframework.mvc.workflow.SubWorkflowChain.continueWorkflow(SubWorkflowChain.java:51)
at io.fusionauth.app.primeframework.FusionAuthMVCWorkflow.perform(FusionAuthMVCWorkflow.java:91)
at org.primeframework.mvc.workflow.DefaultWorkflowChain.continueWorkflow(DefaultWorkflowChain.java:44)
at org.primeframework.mvc.servlet.FilterWorkflowChain.continueWorkflow(FilterWorkflowChain.java:50)
at org.primeframework.mvc.servlet.PrimeFilter.doFilter(PrimeFilter.java:78)
at com.inversoft.maintenance.servlet.MaintenanceModePrimeFilter.doFilter(MaintenanceModePrimeFilter.java:63)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.inversoft.servlet.UTF8Filter.doFilter(UTF8Filter.java:27)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:196)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:364)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:624)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:831)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1650)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:833)