Exception in thread "main" java.lang.IllegalStateException: command gh pr merge bump-0.0.4 --squash --auto --delete-branch failed with output:

Exception in thread "main" java.lang.IllegalStateException: command gh pr merge bump-0.0.4 --squash --auto --delete-branch failed with output:

	at com.gradleup.librarian.core.tooling.Tag_and_bumpKt.runCommand(tag-and-bump.kt:70)
	at com.gradleup.librarian.core.tooling.Tag_and_bumpKt.mergeAndWait(tag-and-bump.kt:123)
	at com.gradleup.librarian.core.tooling.Tag_and_bumpKt.tagAndBump(tag-and-bump.kt:51)
	at com.gradleup.librarian.cli.command.TagAndBump.run(TagAndBump.kt:92)
	at com.gradleup.librarian.cli.command.AbstractTagAndBump.run(TagAndBump.kt:80)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:198)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:211)
	at com.github.ajalt.clikt.parsers.Parser.parse(Parser.kt:18)
	at com.github.ajalt.clikt.core.CliktCommand.parse(CliktCommand.kt:400)
	at com.github.ajalt.clikt.core.CliktCommand.parse$default(CliktCommand.kt:397)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:415)
	at com.github.ajalt.clikt.core.CliktCommand.main(CliktCommand.kt:440)
	at com.gradleup.librarian.cli.MainKt.main(main.kt:6)

Start by reading tag-and-bump.kt at runCommand (line 70) and mergeAndWait (line 123), then trace the call from TagAndBump.run (line 92). Reproduce the failing gh pr merge command and determine the missing command output or failure condition; done means the command failure is diagnosed and handled or reported clearly.