When many files are transferred using FileZilla over FTP the following error appears:
CONFIG_TEXT: Response: 226 Transfer complete
Response: 227 Entering Passive Mode (203,0,113,2,149,172).
Command: REST 1280613
Response: 350 Restarting at 1280613. Send STORE or RETRIEVE to initiate transfer
Command: STOR File 1
Response: 451 File 1: Append/Restart not permitted, try again
Error: File transfer failed after transferring 524,288 bytes in 1 second
Status: Starting upload of D:\File 1
Status: Retrieving directory listing of "/httpdocs/"...
FileZilla's timeout limit is too small.
Increase FileZilla's timeout limit to the bigger value in Edit > Settings > Connection > Timeout.