• I'm submitting a ...

  • 🪲 bug report
  • 🚀 feature request
  • 📚 construct library gap
  • ☎️ security issue or vulnerability => Please see policy
  • ❓ support request => Please see note at the top of this template.

• What is the current behavior?

• Updated nuget packages and npm for cdk from 0.28.0 to 0.36.0
• Create single stack with just a CfnXXX object. In this case I'll use CfnVPC
• Upon app.Synth() and exception is thrown:

• What is the expected behavior (or behavior of feature suggested)?

• CfnXXX objects should be able to be used and app.Synth() would not throw an exception.

• What is the motivation / use case for changing the behavior or adding this feature?

• Creating CfnXXX objects worked in previous versions.

• Please tell us about your environment:

  • CDK CLI Version: 0.36.0
  • Module Version: 0.36.0
  • OS: Windows 10
  • Language: C#

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. associated pull-request, stackoverflow, gitter, etc)

Exception upon app.Synth():
Amazon.JSII.Runtime.JsiiException: 'Amazon.JSII.Runtime.JsiiException: Resolution error: System.ArgumentException: Object of type 'Newtonsoft.Json.Linq.JObject' cannot be converted to type 'System.Collections.Generic.IDictionary2[System.String,System.Object]'. at System.RuntimeType.TryChangeType(Object value, Binder binder, CultureInfo culture, Boolean needsSpecialCast) at System.Reflection.MethodBase.CheckArguments(Object[] parameters, Binder binder, BindingFlags invokeAttr, CultureInfo culture, Signature sig) at System.Reflection.RuntimeMethodInfo.InvokeArgumentsCheck(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) at Amazon.JSII.Runtime.CallbackExtensions.InvokeMethod(InvokeRequest request, IReferenceMap referenceMap) at Amazon.JSII.Runtime.CallbackExtensions.InvokeCallback(Callback callback, IReferenceMap referenceMap, IFrameworkToJsiiConverter converter, String& error). Object creation stack: at new Intrinsic (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\private\intrinsic.js:20:44) at new PostResolveToken (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\util.js:72:9) at CfnVPC._toCloudFormation (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\cfn-resource.js:167:39) at node.addReference.resolve_1.findTokens (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\cfn-element.js:84:77) at Object.findTokens (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\private\resolve.js:125:13) at CfnVPC.prepare (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\cfn-element.js:84:49) at _wrapSandboxCode (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6493:51) at Kernel._wrapSandboxCode (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:7126:20) at ret._ensureSync (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6493:25) at Kernel._ensureSync (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:7097:20) at Kernel.invoke (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6492:26) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6186:28) at completeCallback (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6159:25) at KernelHost.callbackHandler (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6140:16) at KernelHost.kernel.jsii_kernel_1.Kernel.cb [as callbackHandler] (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6124:59) at CfnVPC.value (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6843:41) at Function.prepare (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\construct.js:91:27) at Function.synth (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\construct.js:54:14) at App.synth (C:\Users\rkuhn\AppData\Local\Temp\jsii-kernel-PIrEOT\node_modules\@aws-cdk\core\lib\app.js:67:52) at _wrapSandboxCode (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6493:51) at Kernel._wrapSandboxCode (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:7126:20) at ret._ensureSync (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6493:25) at Kernel._ensureSync (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:7097:20) at Kernel.invoke (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6492:26) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6186:28) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at KernelHost.processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6228:16) at KernelHost.run (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:14) at processRequest (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6132:45) at promise.then.val (C:\Users\rkuhn\AppData\Local\Temp\any5x3uv.2ql\jsii-runtime.js:6213:21) at <anonymous> at Amazon.JSII.Runtime.Services.Client.TryDeserialize[TResponse](String responseJson) at Amazon.JSII.Runtime.Services.Client.ReceiveResponse[TResponse]() at Amazon.JSII.Runtime.Services.Client.TryDeserialize[TResponse](String responseJson) at Amazon.JSII.Runtime.Services.Client.ReceiveResponse[TResponse]() at Amazon.JSII.Runtime.Deputy.DeputyBase.<InvokeMethodCore>g__GetResult|18_0[T](<>c__DisplayClass18_01& )
at Amazon.JSII.Runtime.Deputy.DeputyBase.InvokeMethodCore[T](JsiiMethodAttribute methodAttribute, Object[] arguments, Func3 beginFunc, Func3 invokeFunc)
at Amazon.JSII.Runtime.Deputy.DeputyBase.InvokeInstanceMethod[T](Object[] arguments, String methodName)
at Amazon.CDK.CfnElement.Prepare()'