REQUIRED for all errors and issues:
a) GATK version used: 4.3.3
b) Exact command used:

java -jar gatk-4.4.0.0/gatk-package-4.4.0.0-local.jar CombineGVCFs  -R GRCg7b.dna_rm.toplevel.fa  --variant 1-chr-1.g.vcf.gz  --variant 2-chr-1.g.vcf.gz --variant 3-chr-1.g.vcf.gz --variant 4-chr-1.g.vcf.gz --variant 5-chr-1.g.vcf.gz  -O chr_1.gvcf.gz

 
c) Entire program log:
I used CombineGVCF to combine all files related to the same chromosome in one file and get files for all chromosomes.
chr_1.gvcf.gz
chr_2.gvcf.gz
chr_3.gvcf.gz
chr-4.gvcf.gz
chr-5.gvcf.gz
chr-6.gvcf.gz
chr-7.gvcf.gz
chr-8.gvcf.gz
chr-9.gvcf.gz
chr-10.gvcf.gz
chr-11.gvcf.gz
chr-12.gvcf.gz
chr-13.gvcf.gz
chr-14.gvcf.gz
chr-15.gvcf.gz
chr-16.gvcf.gz
chr-17.gvcf.gz
chr-18.gvcf.gz
chr-19.gvcf.gz
chr-20.gvcf.gz
chr-21.gvcf.gz
chr-22.gvcf.gz
chr-23.gvcf.gz
chr-24.gvcf.gz
chr-25.gvcf.gz
chr-26.gvcf.gz
chr-27.gvcf.gz
chr-28.gvcf.gz
chr-29.gvcf.gz
chr-30.gvcf.gz
chr-31.gvcf.gz
chr-32.gvcf.gz
chr-33.gvcf.gz
chr-34.gvcf.gz
chr-35.gvcf.gz
chr-36.gvcf.gz
chr-37.gvcf.gz
chr-38.gvcf.gz
chr-39.gvcf.gz
W.gvcf.gz
Z.gvcf.gz

Is there any way to combine variants for all chromosomes together or complete the analysis file by file?
Thanks