- improve security of propagate error
- improve security of propagate error

mhellmic/davix,EricKTCheung/davix,cern-it-sdc-id/davix,EricKTCheung/davix,cern-it-sdc-id/davix,mhellmic/davix,EricKTCheung/davix,cern-it-sdc-id/davix,cern-it-sdc-id/davix,mhellmic/davix,mhellmic/davix,EricKTCheung/davix