When trying to connect to the remote server using Filezilla to transfer files, sometimes you might experience an ECONNREFUSED Error that means that two computers refused to establish a hand shake.
Solution:
Install a vsftpd file/plugin on Ubuntu server and then try to connect again: Type sudo apt-get install vsftpd
Sometimes you get an error saying "Cannot establish an FTP connection to an SFTP server. Please select proper protocal. If this is the case then select FTP not SFTP as protocol in FileZilla
Posted On: October 29, 2021 8:42:08 AM
John said:
If you have permission issues, get access to your server and type: sudo chmod -R 777 FolderName. Remember this is not advisable in production environment.
+1 (216)-435-0788 
Upload
Mark said:
Sometimes you get an error saying "Cannot establish an FTP connection to an SFTP server. Please select proper protocal. If this is the case then select FTP not SFTP as protocol in FileZilla