Describing the urllib3 errors

Related to <#86>

docs/facts/known_issues.rst

@@ -11,8 +11,8 @@ Ubuntu 20.04.1 LTS Focal
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 
-In Ubunto release 20.04 they have removed a package name
-:code:`libffi.so.6` and upgraded it with version :code:`libffi.so.7`
+In Ubuntu release 20.04 they have replaced a package named
+:code:`libffi.so.6` and upgraded it to version :code:`libffi.so.7`
 
 This means PyFunceble will trow an error like:
 
@@ -30,3 +30,26 @@ However, the right way to do this is by first locate where your's
 
 :code:`find /usr/lib/ -type f -iname 'libffi.so.*'` and then apply the
 softlink to :code:`libffi.so.7`
+
+Urllib3
+^^^^^^^
+
+On Debian 10 (Buster) and variants as Kubuntu 20.04, we have observed
+issues with urllib3 in combination with python version < :code:`3.8.5`
+
+The current workaround for this is to run PyFunceble from a virtual
+environment like MiniConda.
+
+ .. note::
+
+ See <https://github.com/funilrys/PyFunceble/issues/86> for
+ more details.
+
+ Search keys
+
+ urllib3.exceptions.NewConnectionError:
+ <urllib3.connection.VerifiedHTTPSConnection object at 0x7ff3d26ef4e0>:
+ Failed to establish a new connection: [Errno -2] Name or service not
+ known
+
+ host='pyfunceble-not-resolved', port=443