Uncaught NSRangeException on waitUntilExit()

Hi everyone. I'm getting a strange error using ShellOut. My app crashes with an NSRangeException on the waitUntilExit() call in the launchBash function (ShellOut:428). This seems to mainly be happening when ShellOut is used in an onAppear or onReceive function using SwiftUI. I am calling ShellOut using syntax `let shellOutput = try shellOut(to: command)`. This seems to work outside of these SwiftUI functions.

`*** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArray0 objectAtIndex:]: index 0 beyond bounds for empty NSArray'
terminating with uncaught exception of type NSException`

Does anyone have an idea what could be going on here? Thanks!