Dear Sameh,
How many images are you trying to batch-export at once? What error are you seeing? (If the error is not reported in the client, maybe it is still reported among the server logs; we can help you to look through those if need be.)
While the export is proceeding then deep inside your omero/tmp/ directory on the server there will be a Batch_Image_Export/ directory being assembled. One of those 32×Z, 20×T images alone probably requires well over half a gigabyte of storage in that temporary directory and the export requires to store all of those images at once. During the export it could be worth watching to see if you are running out of disk space on some partition on the server system. You can configure which directory the server uses for its temporary storage by setting the OMERO_TMPDIR variable as at https://docs.openmicroscopy.org/latest/ ... -variables.
Cheers,
Mark