Filezilla: Error at input_pushback not null! – fix Posted by wp.edmunds | Sep 25, 2018 | Hosting/Servers | 0 | When uploading files over ssh – filezilla returns “Filezilla: Error at input_pushback not null!” Fix: Reduce the number of connections, and change tranfer mode to ascii. Under Edit->Settings->Transfers & Edit->Settings->Transfers->File Types