Why does the subprocess fail to function when utilized within the lambda layer due to the error message stating that the file or directory "ld" does not exist?

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This error message may occur because the "ld" library is missing, or the required environment variables are not set up properly in the Lambda function, or the layer. "ld" is a linker, which is responsible for linking several object files into a single executable. When the subprocess runs an executable, it may require the "ld" library to link the executable, and if it's not present, it may result in an error.

To resolve this issue, you can try installing the "ld" library or setting up the environment variables correctly in the Lambda function or layer. You can also consider packaging the necessary libraries and dependencies along with the Lambda code to ensure that it runs successfully.