While the Iowa Caucus debacle played out as a national embarrassment to the Democrat Party, the Nevada caucus also had problems according to Mayor Pete Buttitieg’s campaign:

In the letter [from Mayor Pete Buttigieg’s campaign], a copy of which was obtained by The Nevada Independent, the campaign says that the process of integrating early votes on Caucus Day was “plagued with errors and inconsistencies” and that the campaign had received more than 200 incident reports from precincts around the state, including “a few dozen” relating to how the early vote data was folded in. 

Those issues, according to the campaign, include early vote data not being delivered or delivered after the caucus began, early votes not being used to calculate viability or the strength of each preference group, early votes being allocated to the wrong candidate and, in at least one case, early vote data from the wrong precinct being used.

This is not just sour grapes - as apparently there was a lot of confusion caused by early voting:

Precinct chairs and voters reported confusion throughout Saturday about the realignment process, particularly as it relates to how early voters are allowed to realign. 

According to the campaign, in some cases precinct chairs misstated realignment rules, including telling caucusgoers that a non-viable group could not become viable, and not counting the first preferences of early voters in determining whether a group had become viable on realignment.

Of course, the Nevada Caucus has a history of problems.  In 2008, Bill Clinton alleged voter suppression and intimidation of supporters of Hillary Clinton’s caucus goers:  As he stated at the time:

There was a representative of the organization following along behind us going up to everybody who said that, saying 'if you’re not gonna vote for our guy were gonna give you a schedule tomorrow so you can’t be there.' So, is this the new politics? I haven’t seen anything like that in America in 35 years. So I will say it again – they think they're better than you.

Elections need to be open, fair and honest.  Unfortunately the Democrats seem to be failing that test in their caucuses.