From 74e94ea6bc044f4e7bccf4d5fbeb419967c79d9d Mon Sep 17 00:00:00 2001
From: Annick Renevey <47788523+rannick@users.noreply.github.com>
Date: Mon, 28 Aug 2023 22:06:56 +0200
Subject: [PATCH] fix channel i/o for empty channels

---
 subworkflows/local/starfusion_workflow.nf | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/subworkflows/local/starfusion_workflow.nf b/subworkflows/local/starfusion_workflow.nf
index 4120bc79..c9ba4bf3 100644
--- a/subworkflows/local/starfusion_workflow.nf
+++ b/subworkflows/local/starfusion_workflow.nf
@@ -51,8 +51,8 @@ workflow STARFUSION_WORKFLOW {
     emit:
         fusions               = ch_starfusion_fusions
         star_stats            = ch_star_stats
-        ch_bam_sorted         = ch_align
-        ch_bam_sorted_indexed = bam_sorted_indexed.ifEmpty(null)
+        ch_bam_sorted         = ch_align.ifEmpty([[],[]])
+        ch_bam_sorted_indexed = bam_sorted_indexed.ifEmpty([[],[],[]])
         versions              = ch_versions.ifEmpty(null)
 
     }