I have this error when I try to upload oam files : Extraction of /web/sites/clarahost-fr/0/63/201712/public/www/wp-content/uploads/edge_suite/tmp/graphe_secteur.oam failed.
When i check with filezilla, the directory edge_suite is not created in the the upload directory. When I create it manually, i have the same error and 3 directories appear now : edge_tmp, project and tmp.
This afternoon, I've tried installation and uploading in a local wordpress site that I use for testing : everything is fine...
Thanks for any assistance.