maestro: Error for unsupported iOS version is unclear

When maestro is run on an unsupported iOS version, a grpc error is thrown.

Exception: kotlin.Unit io.grpc.StatusRuntimeException: UNAVAILABLE:

Stack trace:

com.github.michaelbull.result.UnwrapException: kotlin.Unit io.grpc.StatusRuntimeException: UNAVAILABLE: Network closed for unknown reason at
maestro.drivers.IOSDriver.contentDescriptor(IOSDriver.kt:154) at
maestro.Maestro$findElementWithTimeout$1.invoke(Maestro.kt:287) at
maestro.Maestro$findElementWithTimeout$1.invoke(Maestro.kt:286) at
maestro.MaestroTimer.withTimeout(MaestroTimer.kt:16) at
maestro.Maestro.findElementWithTimeout(Maestro.kt:286) at
maestro.orchestra.Orchestra.findElement(Orchestra.kt:278) at
maestro.orchestra.Orchestra.findElement$default(Orchestra.kt:261) at
maestro.orchestra.Orchestra.tapOnElement(Orchestra.kt:234) at
maestro.orchestra.Orchestra.executeCommand(Orchestra.kt:121) at
maestro.orchestra.Orchestra.executeCommands(Orchestra.kt:108) at
maestro.orchestra.Orchestra.runFlow(Orchestra.kt:70) at
maestro.cli.runner.MaestroCommandRunner.runCommands(MaestroCommandRunner.kt:98) at
maestro.cli.runner.TestRunner$runSingle$result$1.invoke(TestRunner.kt:32) at
maestro.cli.runner.TestRunner$runSingle$result$1.invoke(TestRunner.kt:29) at
maestro.cli.runner.TestRunner.runCatching(TestRunner.kt:116) at
maestro.cli.runner.TestRunner.runSingle(TestRunner.kt:29) at
maestro.cli.command.TestCommand.call(TestCommand.kt:60) at
maestro.cli.command.TestCommand.call(TestCommand.kt:30) at
picocli.CommandLine.executeUserObject(CommandLine.java:1933) at
picocli.CommandLine.access$1200(CommandLine.java:145) at
picocli.CommandLine$RunLast.executeUserObjectOfLastSubcommandWithSameParent(CommandLine.java:2332) at
picocli.CommandLine$RunLast.handle(CommandLine.java:2326) at
picocli.CommandLine$RunLast.handle(CommandLine.java:2291) at
picocli.CommandLine$AbstractParseResultHandler.execute(CommandLine.java:2159) at
picocli.CommandLine.execute(CommandLine.java:2058) at
maestro.cli.AppKt.main(App.kt:88)