Problem with parsing "Custom REST Sensor" Json

Dear all, i have the problem that i get always this error if i try to parse a Template for my Sensor:

"unexpected Float while scanning object end expected "," or "}"."

TEMPLATE:

{
	"prtg": {
		"result": [
			{
				"channel": "WiFi RSSI",
				"CustomUnit": "dB",
				"Mode": "Absolute",
				"Value": $.wifi_sta.rssi
			},
			{
				"channel": "Aktueller Stromverbrauch Relay 0",
				"CustomUnit": "Watt",
				"Mode": "Absolute",
				"Value": $.meters.0.power
			},
			{
				"channel": "Aktueller Stromverbrauch Relay 1",
				"CustomUnit": "Watt",
				"Mode": "Absolute",
				"Value": $.meters.1.power
			},
			{
				"channel": "Shelly Temperatur",
				"CustomUnit": "°C",
				"Mode": "Absolute",
				"Value": $.tmp.tC
			}
		]
	}
}

INPUT DATA:

{
	"wifi_sta": {
		"connected": true,
		"ssid": "Fritzbox",
		"ip": "192.168.1.x",
		"rssi": -80
	},
	"cloud": {
		"enabled": true,
		"connected": true
	},
	"mqtt": {
		"connected": false
	},
	"time": "12:51",
	"unixtime": 1610365873,
	"serial": 20100,
	"has_update": false,
	"mac": "C82B9610F7CA",
	"cfg_changed_cnt": 2,
	"actions_stats": {
		"skipped": 0
	},
	"rollers": [
		{
			"state": "stop",
			"source": "input",
			"power": 0.0,
			"is_valid": true,
			"safety_switch": false,
			"overtemperature": false,
			"stop_reason": "normal",
			"last_direction": "open",
			"current_pos": 101,
			"calibrating": false,
			"positioning": true
		}
	],
	"meters": [
		{
			"power": 0.0,
			"overpower": 0.0,
			"is_valid": true,
			"timestamp": 1610369473,
			"counters": [
				0.0,
				0.0,
				0.0
			],
			"total": 1023
		},
		{
			"power": 0.0,
			"overpower": 0.0,
			"is_valid": true,
			"timestamp": 1610369473,
			"counters": [
				0.0,
				0.0,
				0.0
			],
			"total": 891
		}
	],
	"inputs": [
		{
			"input": 0,
			"event": "",
			"event_cnt": 0
		},
		{
			"input": 1,
			"event": "",
			"event_cnt": 0
		}
	],
	"temperature": 21.99,
	"overtemperature": false,
	"tmp": {
		"tC": 21.99,
		"tF": 71.58,
		"is_valid": true
	},
	"temperature_status": "Normal",
	"update": {
		"status": "idle",
		"has_update": false,
		"new_version": "20201228-092242/v1.9.3@ad2bb4e3",
		"old_version": "20201228-092242/v1.9.3@ad2bb4e3"
	},
	"ram_total": 49360,
	"ram_free": 34088,
	"fs_size": 233681,
	"fs_free": 121986,
	"voltage": 231.74,
	"uptime": 1194720
}

Can somebody give me some Hint, what iam doing wrong?

Thank you very much!

json rest sensor