Avoid errors for some invalid requests viewing attachments
Avoid errors for some invalid requests viewing attachments

rmzelle/zotero,retorquere/zotero,gracile-fr/zotero,gracile-fr/zotero,gracile-fr/zotero,retorquere/zotero,rmzelle/zotero,rmzelle/zotero,retorquere/zotero