When I used this comand:
qiime tools import
--type 'SampleData[PairedEndSequencesWithQuality]'
--input-path casava-medicago-paired-end-demultiplexed
--input-format CasavaOneEightSingleLanePerSampleDirFmt
--output-path demux-paired-end.qza
I get this error:
There was a problem importing casava-medicago-paired-end-demultiplexed:
Missing one or more files for CasavaOneEightSingleLanePerSampleDirFmt: '.+_.+_L[0-9][0-9][0-9]_R[12]_001\.fastq\.gz'
There are 24 files, R1 and R2 of 12 samples. On other occasions I have not had any errors when importing.