Add some logs for backpressure

src/neo4j-stream-writer.ts

@@ -36,6 +36,8 @@ class Neo4jStreamWriter extends Writable {
       // backpressure will get exerted this way.
       // todo: check the error first
       // neo4j.error.SERVICE_UNAVAILABLE
+      core.getLogger().error(e);
+      core.getLogger().error('from' + chunk.parsed.from);
       setTimeout(() => {
         this._write(chunk, encoding, callback);
       }, this.timeout);