New to Nextflow, the process to map using STAR is not executing.

Modules.nf

process STAR_INDEX {
tag "$genome.baseName"

input:
  path genome
  output:
  path "genome_dir"

  script:
  """
  mkdir genome_dir

  STAR --runMode genomeGenerate \
       --genomeDir genome_dir \
       --genomeFastaFiles ${genome} \
       --runThreadN ${task.cpus}

   """
}

process STAR_ALIGN {
tag "$replicateId"

input: 
  path genome
  path genomeDir
  tuple val(replicateId), path(reads) 

output: 
tuple \
  val(replicateId), \
  path('Aligned.sortedByCoord.uniq.bam'), \
  path('Aligned.sortedByCoord.uniq.bam.bai')

script:
"""
# ngs-nf-dev Align reads to genome
STAR --genomeDir $genomeDir \
   --readFilesIn $reads \
   --runThreadN $task.cpus \
   --readFilesCommand zcat \
   --outFilterType BySJout \
   --alignSJoverhangMin 8 \
   --alignSJDBoverhangMin 1 \
   --outFilterMismatchNmax 999

# Run 2-pass mapping (improve alignmets using table of splice junctions and create a new index)  
STAR --genomeDir $genomeDir \
   --readFilesIn $reads \
   --runThreadN $task.cpus \
   --readFilesCommand zcat \
   --outFilterType BySJout \
   --alignSJoverhangMin 8 \
   --alignSJDBoverhangMin 1 \
   --outFilterMismatchNmax 999 \
   --sjdbFileChrStartEnd SJ.out.tab \
   --outSAMtype BAM SortedByCoordinate \
   --outSAMattrRGline ID:$replicateId LB:library PL:illumina PU:machine SM:GM12878

# Select only unique alignments, no multimaps
(samtools view -H Aligned.sortedByCoord.out.bam; samtools view Aligned.sortedByCoord.out.bam| 
grep -w 'NH:i:1') \
|samtools view -Sb - > Aligned.sortedByCoord.uniq.bam

 # Index the BAM file
samtools index Aligned.sortedByCoord.uniq.bam
"""
}

rnaseq.nf

nextflow.enable.dsl=2

params.reads = "${launchDir}/data/*.fastq"
params.genome = "${launchDir}/genome/genome.fna"

include {
   STAR_INDEX;
   STAR_ALIGN;} from './modules.nf'

workflow {

    reads_ch = Channel.fromFilePairs(params.reads)

    // Execute processes in the workflow
    STAR_INDEX(params.genome)
    STAR_ALIGN(params.genome, STAR_INDEX.out, reads_ch)
 }![enter image description here][1]