Secure FTP com.jcraft.jsch.JSchException

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Secure FTP com.jcraft.jsch.JSchException

I got this error
Démarrage du job ftp a 17:57 22/03/2017.
connecting to socket on port 3558
connected
Exception in component tFTPConnection_1
com.jcraft.jsch.JSchException: The cipher 'aes256-cbc' is required, but it is not available.
    at com.jcraft.jsch.KeyPair.loadPPK(KeyPair.java:1035)
    at com.jcraft.jsch.KeyPair.load(KeyPair.java:591)
    at com.jcraft.jsch.KeyPair.load(KeyPair.java:543)
    at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.java:40)
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:393)
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:374)
    at local_project.ftp_0_1.ftp.tFTPConnection_1Process(ftp.java:341)
    at local_project.ftp_0_1.ftp.runJobInTOS(ftp.java:627)
    at local_project.ftp_0_1.ftp.main(ftp.java:484)
disconnected
Job ftp terminé à 17:57 22/03/2017.
but library seems to be installed
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Re: Secure FTP com.jcraft.jsch.JSchException

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