problem with revpi-getpin node

[{"id":"753b0b28.3ad9f4","type":"http in","z":"8146d687.063a78","name":"","url":"/test2","method":"get","upload":false,"swaggerDoc":"","x":100,"y":220,"wires":[["bc0d6ab9.be03e8"]]},{"id":"c05a34f7.f42198","type":"http response","z":"8146d687.063a78","name":"","statusCode":"","headers":{},"x":890,"y":660,"wires":[]},{"id":"ef72eb3e.c6fcf8","type":"revpi-getpin","z":"8146d687.063a78","server":"c2b95924.413b88","getoverwritevalue":false,"inputpin":"AOut_1","x":490,"y":420,"wires":[["88f74cb5.18f73"]]},{"id":"bc0d6ab9.be03e8","type":"change","z":"8146d687.063a78","name":"flow.req to msg.req","rules":[{"t":"set","p":"req","pt":"flow","to":"req","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":230,"y":320,"wires":[["a2b08437.d88648"]]},{"id":"88f74cb5.18f73","type":"change","z":"8146d687.063a78","name":"msg.req to flow.req","rules":[{"t":"set","p":"req","pt":"msg","to":"req","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":710,"y":500,"wires":[["e4fbf00.f356b1"]]},{"id":"a2b08437.d88648","type":"change","z":"8146d687.063a78","name":"flow.res to msg.res","rules":[{"t":"set","p":"res","pt":"flow","to":"res","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":270,"y":360,"wires":[["ef72eb3e.c6fcf8"]]},{"id":"e4fbf00.f356b1","type":"change","z":"8146d687.063a78","name":"msg.res to flow.res","rules":[{"t":"set","p":"res","pt":"msg","to":"res","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":710,"y":540,"wires":[["c05a34f7.f42198"]]},{"id":"9dc3ce55.2972a","type":"comment","z":"8146d687.063a78","name":"save to flow","info":"","x":230,"y":280,"wires":[]},{"id":"68f4c56a.d3ee4c","type":"comment","z":"8146d687.063a78","name":"restore from flow","info":"","x":780,"y":460,"wires":[]},{"id":"c2b95924.413b88","type":"revpi-server","host":"localhost","port":"8000","user":"","password":"","rejectUnauthorized":false,"ca":""}]