mjhjmtu

I'm try to implement script that can be used to file transfer between two serves here I'm using lftp in terminal error I get

code and error 1

lftp -u user,password sftp://xxx.xxxxx.xxxx
lftp user@XXXX.XXXX.XXX:~> ls
ls: Fatal error: pseudo-tty allocation failed: No such file or directory

code and error 2

lftp -u user,password xxx.xxxxx.xxxx
lftp user@xxx.xxxx.xxxx:~> ls 
WARNING: failed to configure server name indication (SNI) TLS extension
ls: Login failed: 500 PASS: USER must be sent first

code error 3

ssh -t USER@XXX.X.XXX.XX "cd /Home/path/dir/"
user@xx.xx.xxx.xxx's password: 
PTY allocation request failed on channel 0

USING CURL

 curl -u USER:PASS 'ftp://XX.XXX.XXXX/path/To_dir/' -o /tmp/test.file 
 % Total % Received % Xferd Average Speed Time Time Time Current
 Dload Upload Total Spent Left Speed
 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
curl: (67) Access denied: 500

I'm using site ground host provider and it has limited my options here

I Only has ftp access no ssh access so I can't use scp or rsyunc . host provider does not provide me install and advance system modification on this server

I use this user and password with filezila and it connect without issue so user name and password 100% working

same time I use this script with my local Centos and Ubuntu vms and script work fine so script commands 100% ok too

full script I try to use

lftp -u user,password sftp://xxx.xxxxx.xxxx << --EOF--
cd /path/on/remote/server/dir 
mput * 
quit
--EOF--

after try all the internet solution and fail with host system ,host support guys suggest me to use lftp without pseudo-terminal (/dev/ptmx) devices

can you guys provide me some insights on this . how to implement lftp with out pseudo-terminal