Proj version 0.0.0 is installed, but cartopy requires at least version 4.9.0

[kkaran97]

Hi,
I am new to this. I am trying to install cartopy in RHEL and keep getting this error.
putty.txt

Error:
Getting requirements to build wheel ... error
ERROR: Command errored out with exit status 1:
command: /usr/bin/python /usr/local/lib/python3.6/site-packages/pip/_vendor/pep517/in_process/_in_process.py get_requires_for_build_wheel /tmp/tmp774q8stt
cwd: /tmp/pip-install-r4yqxrd7/cartopy_e8e0f734064c41c3906896c01e5c7fa2
Complete output (3 lines):
setup.py:169: UserWarning: Unable to determine Proj version. Ensure you have 4.9.0 or later installed, or installation may fail.
'.'.join(str(v) for v in PROJ_MIN_VERSION), ))
Proj version 0.0.0 is installed, but cartopy requires at least version 4.9.0.

I have attached the full error in the files. Can anyone help with this?