I've recently downloaded the FastqCLeaner to process paired-end fastq files locally using R (4.0.3). I'm having trouble with the shiny app. It is not uploading my second fastq file, and is repeated asking for file 1. Can someone help me? is there another package i can use for trimming and alignment in R? I've tried GREP2 but had massive installation issues, i wasted 2 days trying to install in R.