Error while running python code in aws lambda function:

Create an Amazon Linux2 environment using the Dockerfile below.

FROM --platform=linux/x86_64 amazonlinux:2

ARG PYTHON_VERSION=3.12.1

RUN yum update -y && yum install -y tar gzip make gcc epel-release openssl11 openssl11-devel bzip2-devel libffi-devel \
  && curl https://www.python.org/ftp/python/${PYTHON_VERSION}/Python-${PYTHON_VERSION}.tgz | tar xz \
  && export CFLAGS=$(pkg-config --cflags openssl11) && export LDFLAGS=$(pkg-config --libs openssl11) \
  && cd Python-${PYTHON_VERSION} && ./configure && make && make install \
  && cd - && rm -rf Python-${PYTHON_VERSION}

ADD entrypoint.sh /

RUN yum install -y zip \
  && mkdir /python \
  && chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh looks like this:

#!/bin/bash -eu

SRC=/python
DIST=/dist/layer.zip

pip3 install -t ${SRC} $@
rm -f ${DIST}
zip -q -r ${DIST} ${SRC}

Please build with the following command.

docker build . -t bundle-pip-modules-for-aws-lambda-layers:python3.12

Finally, create a layer using the following command.
Please write your required modules in requirements.txt.
Once layer.zip is completed, try registering it as a Lambda layer.

docker run --rm \
    -v $(pwd)/requirements.txt:/requirements.txt \
    -v $(pwd):/dist \
    bundle-pip-modules-for-aws-lambda-layers:python3.12 \
    -r requirements.txt

Hello.

Does the Python version of the environment where you created the langchain module layer match the Python version used by Lambda?
If they do not match, try creating a layer by matching the Python version of the layer creation environment and Lambda.