by Visvanath Ratnaweera.
If it get stuck during the upload, increase the maximum upload size: https://docs.moodle.org/26/en/Installation_FAQ#Maximum_upload_file_size_-_how_to_change_it.3F.
If it happens during restore, switch on https://docs.moodle.org/26/en/Debugging.
If it happens during restore, switch on https://docs.moodle.org/26/en/Debugging.