message: fix: Undefined error when removeNode event and no node is selected
diff: @@ -1071,7 +1071,7 @@ export default {
  })
  this.socket.on(this.socketEvents.nodeRemoved, node => {
  - if (self.selectedNode.node_id === node.node_id) {
  + if (self.selectedNode && self.selectedNode.node_id === node.node_id) {
  self.selectedNode = null
  }
  self.$set(self.nodes, node.node_id, node)
  