JSONCodecFactory NPE

Testing PCEP Rpc's we get NPE when using Json, same rpc have correct behavior when using XML. Using master branch ( Be )

https://jenkins.opendaylight.org/releng/view/bgpcep/job/bgpcep-csit-1node-periodic-throughpcep-only-beryllium/

Steps for reproduce the bug.
Run odl with features odl-bgpcep-pcep-all, odl-restconf-noauth

RPC Tested are
http://localhost:8181/restconf/operations/network-topology-pcep:add-lsp
http://localhost:8181/restconf/operations/network-topology-pcep:remove-lsp
http://localhost:8181/restconf/operations/network-topology-pcep:update-lsp

XML used can be found
https://wiki.opendaylight.org/view/BGP_LS_PCEP:Programmer_Guide

JSON

delete

{
"input" :

{ "node" : "pcc://127.0.0.1", "name" : "update-tunel", "network-topology-ref": "/network-topology:network-topology/network-topology:topology[network-topology:topology-id=\"pcep-topology\"]" }

}

update/add

{
"input": {
"node": "update-tunel",
"name": "lsp_test",
"network-topology-ref": "/network-topology:network-topology/network-topology:topology[network-topology:topology-id=\"pcep-topology\"]",
"arguments": {
"odl-pcep-ietf-stateful07:lsp" :

{ "delegate" : "true", "administrative" : "true" }

,
"endpoints-obj": {
"ipv4":

{ "source-ipv4-address": "192.168.0.1", "destination-ipv4-address": "192.168.0.4" }

},
"ero" : {
"subobject" : [
{
"loose" : "false",
"ip-prefix" :

{ "ip-prefix" : "192.168.99.2/32" }

},
{
"loose" : "false",
"ip-prefix" :

{ "ip-prefix" : "192.168.0.4/32" }

}
]
}
}
}
}