adop phase=fs_clone failed

Hello,

i try to run adop phase=fs_clone as part of Applying the Latest AD and TXK Release Update Packs to Oracle E-Business Suite Release 12.2 (Doc ID 1617461.1) but it fails with following errors:

Config Option : cloneohsconfig

ERROR: Invalid node format ebs.example.com:7202,null

Enter nodes as <hostname>:<port> comma separated format

also it shows the following:

*******FATAL ERROR*******

PROGRAM : (/u01/install/VISION/fs2/EBSapps/appl/ad/12.0.0/patch/115/bin/txkADOPPreparePhaseSynchronize.pl)

TIME    : Sat Jan 16 12:56:45 2016

FUNCTION: main::runFSCloneStage [ Level 1 ]

ERRORMSG: /u01/install/VISION/fs2/EBSapps/appl/ad/12.0.0/bin/adclone.pl did not go through successfully.

any help please ?