api/devices 400 (Bad Request)

adicionar_http(){


			let data =  JSON.stringify({
							name    : this.name,
							uniqueId: this.imei_serial,
							groupid : this.groupo,
							phone   : this.phone,
							category: this.modelo,
							model   : this.contato,
							contact : this.placa,
							attributes: {},
							disabled  : 'false',
							photo     : '',
							// chassi: 'chassi',
							//renavam: 'renavam',
							//placa: 'placa' 
				})
			let headers = {
							headers: {
								//Authorization: 'Bearer ' + token //the token is a variable which holds the token
								//'Content-Type': 'application/x-www-form-urlencoded',
								'Content-Type':	'application/json',
								'Accept' : 'application/json',
								'Authorization': 'Basic '+this.$store.getters.getToken,
								'Connection' : 'Keep-Alive',
								'Access-Control-Allow-Origin': '*'
							},
							proxy: {
								host: this.url[0]+this.url[1],
								port: this.url[2]
							}
				}

				this.$http.post(
						this.$store.getters.getHost+'/api/devices', 
						headers, 
						data
				)
				.then( response => {
						console.log(response)
				})

		}

map:1 Access to XMLHttpRequest at 'http://207.180.234.233:13000/api/devices' from origin 'http://localhost:8081' has been blocked by CORS policy: Request header field access-control-allow-origin is not allowed by Access-Control-Allow-Headers in preflight response.