Hello, I am following the workflow for joint genotyping here: https://gatk.broadinstitute.org/hc/en-us/articles/360035890411-Calling-variants-on-cohorts-of-samples-using-the-HaplotypeCaller-in-GVCF-mode 

I am using gatk version 4.0 , I am facing this error in HaplotypeCaller:

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A USER ERROR has occurred: variant_index_type is not a recognized option

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gatk HaplotypeCaller \
--reference ~/hs37d5.fa \
--input ~/GATK/test_joint_genotype/$id”Al_sort_md_sN_RG_bqsr.bam” \
--output ~/GATK/test_joint_genotype/$id”Al_sort_md_sN_RG_bqsr_HCT.g.vcf” \
-ERC GVCF \
--variant_index_type LINEAR \
--variant_index_parameter 128000

I tried again this time changing the parameter from --variant_index_type LINEAR

to -variant_index_type LINEAR and I got this error: 

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A USER ERROR has occurred: v is not a recognized option

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gatk HaplotypeCaller \
--reference ~/hs37d5.fa \
--input ~/GATK/test_joint_genotype/$id”Al_sort_md_sN_RG_bqsr.bam” \
--output ~/GATK/test_joint_genotype/$id”Al_sort_md_sN_RG_bqsr_HCT.g.vcf” \
-ERC GVCF \
-variant_index_type LINEAR \
--variant_index_parameter 128000

I would appreciate help on how to solve this. Thank you in advance.