Race Condition Error in AWS-Parameters-and-Secrets-Lambda-Extension

Hey, we tried to use the AWS-Parameters-and-Secrets-Lambda-Extension to get some parameters within our Lambda Function.

Unfortunately the code of the layer throws an error. As far I can tell from the outside it looks like a race condition error. It mostly happens after the function got deployed and runs for the first time, or when it comes back from a cold start.

I do not know if this is the right place to report it, but here are some details. Let me know if there is a Repo where I can create an Issue.

Environment:
Lambda, arm64, Node.js 16.x
Layer: arn:aws:lambda:eu-west-1:015030872274:layer:AWS-Parameters-and-Secrets-Lambda-Extension-Arm64:2

Error:

fatal error: concurrent map read and map write

goroutine 8 [running]:

golang.a2z.com/GoAmzn-SSMParameterStoreLambdaExtension/cache.(*Cache).Add(0x40001a6140, {0x31f0e0?, 0x400001f990}, {0x36e2c0?, 0x4000484900}, 0x6a3780?)

/local/p4clients/pkgbuild-6j8da/workspace/src/GoAmzn-SSMParameterStoreLambdaExtension/cache/cache.go:69 +0x114

golang.a2z.com/GoAmzn-SSMParameterStoreLambdaExtension/parameters.(*Retriever).Get(0x40001b4280, 0x40001e1b90)

/local/p4clients/pkgbuild-6j8da/workspace/src/GoAmzn-SSMParameterStoreLambdaExtension/parameters/retriever.go:107 +0x84c

...

/opt/brazil-pkg-cache/packages/GoLang/GoLang-1.x.89619.0/AL2_x86_64/DEV.STD.PTHREAD/build/lib/src/net/http/transport.go:1752 +0x1234

The stack trace is very long so i skipped a lot in between ... if one need it please ask.