Call observer onError only once
Call observer onError only once

gurkerl83/neo4j-javascript-driver,neo4j/neo4j-javascript-driver,neo4j/neo4j-javascript-driver,gurkerl83/neo4j-javascript-driver,neo4j/neo4j-javascript-driver,neo4j/neo4j-javascript-driver,gurkerl83/neo4j-javascript-driver,neo4j/neo4j-javascript-driver