How to upgrade version of CXXABI in libstdc++.so.6

I'm currently trying to run a Python program using RDKit and am facing some errors. I was debating whether to post this on Stack Overflow or here, but doing some research gave me the feeling that this is a bit more related to Ubuntu's libstdc++.

The problem is that whenever I try to import a Python package, I get the error:

ImportError: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `CXXABI_1.3.11' not found (required by /home/user1/anaconda3/envs/user1/lib/python3.7/site-packages/rdkit/DataStructs/../../../../libRDKitDataStructs.so.1)

I've done a bit of research and managed to do the following:

I set the LD_LIBRARY_PATH environment variable to /home/user1/anaconda3/lib/ since this is where my libstdc++.so.6 is located. After that I kept getting the "could not find CXXABI_1.3.11 which is required version" error, and so did:

strings /home/user1/anaconda3/lib/libstdc++.so.6 | grep CXXABI

which outputs:

CXXABI_1.3
CXXABI_1.3.1
CXXABI_1.3.2
CXXABI_1.3.3
CXXABI_1.3.4
CXXABI_1.3.5
CXXABI_1.3.6
CXXABI_1.3.7
CXXABI_1.3.8
CXXABI_1.3.9
CXXABI_TM_1
CXXABI_FLOAT128

I'm assuming that in order for the original program to run properly, I need to be seeing CXXABI_1.3.11 when I run the strings command as I did.

Does anybody know how I might be able to upgrade the version here? Thanks.

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