The International Genome Sample Resource (IGSR) has stopped mirroring sequence files from the ENA but instead using the sequence.index files to point to the FTP location for the fastq file.
These files can also be downloaded using aspera. You will need to get the ascp program as described in how to download files using aspera
Then you will need to change the ENA FTP host to the ENA Aspera host.
This means you need to change the FTP url to something suitable for the ascp command:
You aspera command would need to look like
ascp -i bin/aspera/etc/asperaweb_id_dsa.openssh -Tr -Q -l 100M -L- firstname.lastname@example.org:/vol1/fastq/ERR008/ERR008901/ERR008901_1.fastq.gz ./
For further information, please contact email@example.com. Full documentation about how to use aspera to download files from the ENA please see their document Downloading sequence files