RPC Server connection strange behaviors

[CaveSpectre11]

First time using SPMT, so I may have been doing something wrong. Two things to note regarding trying to use RPC Server connection log:

SPMT v.0.6.1-a
PIVX-Qt: v4.1
Ubuntu: 18-04

1. Trying to connect to "Local Wallet" the first time took a bit, and then generated 5 or 6 connected windows (local wallet running PIVX-Qt v4.1.0 and is actively functioning for cli commands)
2. Second time trying to connect to "Local Wallet" (after trying to ctrl-z to put it in the background, and it locking up on me and having to kill it). Fails with err: 'NoneType' object is not iterable
3. trying to connect to losangeles.randomzebra.party also gets the same nonetype error. amsterdam and singapore appear to work.