getting this error on any cdk command like bootstrap or deploy

[muazazhar]

steps to reproduce..

1. clone step01_lambda repo.
2. change cdk version to 1.119.0
3. run cdk bootstrap or cdk deploy

D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\aws-iam\lib\principals.ts:775 return stack.regionalFact( ^ TypeError: Resolution error: Resolution error: Resolution error: Resolution error: stack.regionalFact is not a function. Object creation stack: at stack traces disabled. Object creation stack: at stack traces disabled.. at ServicePrincipalToken.resolve (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\aws-iam\lib\principals.ts:775:18) at RememberingTokenResolver.resolveToken (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\resolvable.ts:80:24) at RememberingTokenResolver.resolveToken (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:286:18) at resolve (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:212:51) at Object.resolve [as mapToken] (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:119:77) at TokenizedStringFragments.mapTokens (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\string-fragments.ts:65:33) at RememberingTokenResolver.resolveString (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\resolvable.ts:99:22) at RememberingTokenResolver.resolveString (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:290:23) at resolve (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:170:48) at Object.resolve (D:\Unicorn\full-stack-serverless-cdk\step01_hello_lambda\node_modules\@aws-cdk\core\lib\private\resolve.ts:119:77)