command line – Why is renaming files with sed and mv printing ‘$’r’

I am using Ubuntu on a Windows 10 machine. I am trying to rename 5 files (file1.txt, file2.txt, file3.txt, file4.txt, file5.txt) so that each file is replaced by Sample#_VoucherID.fastq.gz.

To do this, I haver a .csv file that has a format of oldfile,newfile and I am using sed as follows”

sed 's/^/mv -vi /;s/,/ /;s/$//' < File-Rename.csv | bash -e

Whenever I run this, I instead of getting:

Sample#_VoucherID.fastq.gz for each file, I get 'Sample#_VoucherID.fastq.gz'$'r' instead. Why is this happening? If I use mv just in the Ubuntu terminal to rename files, I get the files renamed as I want, without the ',$,and before and after the file name. If I don’t use the | bash -e in the file and I remove the quotes, it prints:

mv -vi file1.txt Sample1_VoucherID.fastq.gz

mv -vi file2.txt Sample2_VoucherID.fastq.gz

mv -vi file3.txt Sample3_VoucherID.fastq.gz

mv -vi file4.txt Sample4_VoucherID.fastq.gz

mv -vi file5.txt Sample5_VoucherID.fastq.gz

however, it does not actually run the mv command. How can I rename my files without getting those extra characters?