Conda: concurrent.futures.process.BrokenProcessPool: A process in the process pool was terminated abruptly while the future was running or pending

I want to install Anaconda on my mac (version 10.9.5).

The command I used:

sh Anaconda3-2020.02-MacOSX-x86_64.sh 

Led to this error:

Unpacking payload ...
Traceback (most recent call last):                                                                                                                                  
  File "entry_point.py", line 69, in <module>
  File "concurrent/futures/process.py", line 483, in _chain_from_iterable_of_lists
  File "concurrent/futures/_base.py", line 598, in result_iterator
  File "concurrent/futures/_base.py", line 435, in result
  File "concurrent/futures/_base.py", line 384, in __get_result
concurrent.futures.process.BrokenProcessPool: A process in the process pool was terminated abruptly while the future was running or pending.
[1061] Failed to execute script entry_point

After rooting around, I found this suggestion, that I check the hash.

I typed this:

shasum -a 512 /Users/Slowat/Anaconda3-2020.02-MacOSX-x86_64.sh 

and the output was:

aa1ed0c40646ba9041abf59c13ce38da1dc51bf15de239b6f966a0b02b4c09c960ae33698c72aa46db41731f8e67938d1972fcb76fa4c5c8081bc0272bb1b535  /Users/Slowat/Anaconda3-2020.02-MacOSX-x86_64.sh

The hash listed here does not match this.

So then I thought it was an issue with downloaded, so i deleted the bash script and the directory that anaconda attempted to make during the failed installation.

I double checked my python version:

localhost:~ Slowat$ python --version
Python 3.7.4

and re-downloaded Anaconda3-2020.02-MacOSX-x86_64.sh from here.

I re-checked the hash:

aa1ed0c40646ba9041abf59c13ce38da1dc51bf15de239b6f966a0b02b4c09c960ae33698c72aa46db41731f8e67938d1972fcb76fa4c5c8081bc0272bb1b535  /Users/Slowat/Anaconda3-2020.02-MacOSX-x86_64.sh

and it's still wrong. Any ideas what I'm doing wrong here (mainly for the original area, checking the hash was just an idea I had).