Cannot import Python pulsar-client==2.4.2 on Mac Os Catalina 10.15.2

Describe the bug With correctly installed libpulsar and protobuf and pulsar-client 2.4.2 cannot import pulsar on Python 3.7.5. An attempt to import raises ImportError: dlopen(/tmp/check/.venv/lib/python3.7/site-packages/_pulsar.cpython-37m-darwin.so, 2): Library not loaded: /usr/local/opt/protobuf@2.6/lib/libprotobuf-lite.9.dylib

To Reproduce Steps to reproduce the behavior:

1. Run:

# python3 -V
Python 3.7.5
# python3
Python 3.7.5 (default, Dec 12 2019, 09:41:03)
[Clang 11.0.0 (clang-1100.0.33.16)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pulsar
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/tmp/check/.venv/lib/python3.7/site-packages/pulsar/__init__.py", line 102, in <module>
    import _pulsar
ImportError: dlopen(/tmp/check/.venv/lib/python3.7/site-packages/_pulsar.cpython-37m-darwin.so, 2): Library not loaded: /usr/local/opt/protobuf@2.6/lib/libprotobuf-lite.9.dylib
  Referenced from: /tmp/check/.venv/lib/python3.7/site-packages/_pulsar.cpython-37m-darwin.so
  Reason: image not found

1. See the error

Desktop (please complete the following information):

• OS: Catalina 10.15.2

[sijie]

@bry00 can you try install protobuf and zstd?

brew install zstd protobuf

[Dcep]

@bry00 can you try install protobuf and zstd?

brew install zstd protobuf

Fixed my issue with same error with pulsar-client==2.5.0 & OSX 10.13.6