I'm trying to use one Global Context but with bad result.

Here my simple flow
[{"id":"c41d9687.a88a88","type":"inject","z":"cbaa198.a6875e8","name":"","props":[{"p":"payload","v":"ON","vt":"str"},{"p":"topic","v":"sensors/sensor1","vt":"string"}],"repeat":"","crontab":"","once":false,"topic":"sensors/sensor1","payload":"ON","payloadType":"str","x":170,"y":1580,"wires":[["6d6765c0.1c92ac"]]},{"id":"6d6765c0.1c92ac","type":"function","z":"cbaa198.a6875e8","name":"With Global","func":"var count=global.get('gcount') || 0;\ncount +=1;\nmsg.payload=\"global= \"+count;\nglobal.set('gcount',count);\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":427,"y":1566,"wires":[["6e8f0590.7cb51c"]]},{"id":"6e8f0590.7cb51c","type":"debug","z":"cbaa198.a6875e8","name":"","active":true,"console":"false","complete":"false","x":650,"y":1580,"wires":[]}]

After I injected the variable not appear and after few seconds Node_red and SignalK stop working and I need to restart the Pi4.
I'm using the Node-red plugin 2.11.0

Thanks.