sftp open error: TypeError: catching classes that do not inherit from BaseException is not allowed

I am running on CentOS 7.7.1908, Python 3.6.8-13.el7, and paramiko 2.7.2.

I have this script that attempts to open a file open on a remote server:

#!/usr/bin/env python3
import paramiko

server =         'serverName'
user =           'userName'
ssh_hosts_file = '/path/.ssh/known_hosts'
ssh_key =        '/path/.ssh/id_rsa'

client = paramiko.SSHClient()
client.load_host_keys(ssh_hosts_file)
client.connect(server, port=22, username=user, password="None", key_filename=ssh_key)

sftp_client = client.open_sftp()
remote_file = sftp_client.open('/tmp/test-file', 'r')

When I execute I get this error:

Exception ignored in: <bound method SFTPFile.__del__ of <paramiko.sftp_file.SFTPFile object at 0x7fbc8a3dbcf8>>
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/site-packages/paramiko/sftp_file.py", line 76, in __del__
  File "/usr/local/lib/python3.6/site-packages/paramiko/sftp_file.py", line 108, in _close
TypeError: catching classes that do not inherit from BaseException is not allowed

If I open the file for appending it does succeed. I can add a new line to that file. However, the error is still generated.

Can someone help me to understand how I can solve this, so an error is not returned?

Reproduce the script on the reported Python and Paramiko versions, then inspect paramiko/sftp_file.py around del and _close, where the traceback occurs. Compare read and append handling and identify why cleanup produces the TypeError; done means opening the remote file and allowing cleanup without this error.