Is it normal that my amplicon sequence variants (ASVs) have gaps ?

Question

[v.berriosfarias]

Hello my chief sent me some working files to perform a functional analysis from amplicon sequences. (from 16S rRNA genes)

This is the first time that I perform an analysis from amplicon sequences so I want to know if from the DADA2 pipeline it is normal to output a fasta file with ASVs with gaps inbetween the sequences like this:

Thanks for your time :)