Warning: Could not open read file "mRNA.fq" for reading; skipping..

[XRL-1343959526]

(xrl) [qinyu@login01 RNA-fastq]$ for i in *.fa; do

file=${i##*/}
base=${file%.fa}
bowtie2 --no-hd  -x $base -U mRNA.fq --al resuts/$base.C4_out

done
(ERR): Could not open --al output file 'resuts/bin.39.C4_out'
Exiting now ...
stat: Bad file descriptor
Warning: Could not open read file "mRNA.fq" for reading; skipping...
Error: No input read files were valid
(ERR): Could not open --al output file 'resuts/bin.77.C4_out'
Exiting now ...
stat: Bad file descriptor
Warning: Could not open read file "mRNA.fq" for reading; skipping...
Error: No input read files were valid

how to solve