TraCI connection issues, netedit segfault on macOS Catalina

[JVillella]

If running smarts gives you,

core/smarts.py", line 284, in setup
    provider_state = self._setup_providers(self._scenario)
  File "/Users/julian/src/SMARTS/smarts/core/smarts.py", line 550, in _setup_providers
    provider_state.merge(provider.setup(scenario))
  File "/Users/julian/src/SMARTS/smarts/core/sumo_traffic_simulation.py", line 199, in setup
    self._initialize_traci_conn()
  File "/Users/julian/src/SMARTS/smarts/core/sumo_traffic_simulation.py", line 123, in _initialize_traci_conn
    waitBetweenRetries=0.05,
  File "/usr/local/opt/sumo/share/sumo/tools/traci/main.py", line 121, in connect
    raise TraCIException("TraCI server already finished")
traci.exceptions.TraCIException: TraCI server already finished

or running netedit gives you something like,

[1]    1757 segmentation fault  netedit

and you're on macOS Catalina or newer then follow these steps to fix it eclipse-sumo/sumo#6242 (comment).

[JVillella]

Just posting this here in case others run into this issue.