What causes the following error and how do I fix it ?
msg : error
"TypeError: Cannot read properties of undefined (reading 'split')"
An undefined property that a script is trying to read another property from, often hard to pin point with no info.
What info would you like to know? I am using .json format as input
{
"name" : "Integer001",
"value" :"1444535466",
"type" : "int32"
},
and more objects here
What you are attempting to do?
What nodes are you using?
What are your inputs?
What output you expect?
Maybe a flow json.
what operating system?
What node is producing the error?
Any code you may be using.
Maybe then someone might pin point what's causing your error.
I am attempting to establish an MQTT communication with Sparkplug B specification
The nodes I am using are inject, function, Sparkplug plus publisher, subscriber and debug (payload) node.
The input is a .json code sent via the function block
msg.payload = {
"timestamp" : 1504739061501,
"metrics" : [
{
"name" : "Integer001",
"value" :"1444535466",
"type" : "int32"
},
{
"name" : "String001",
"value" : "hello",
"type" : "string"
},
{
"name" : "Boolean001",
"value" : "true",
"type" : "boolean"
},
{
"name" : "Float001",
"value" :"192.192",
"type" : "float"
}
]
};
return msg;
I expect output to be structured objects
OS is Windows 10 Pro
Debug node is producing the error
{Admin edit: wrap code in a ``` codeblock}
it is perfectly valid...
And it is...
If the msg is reaching a debug node, then it is not likely an error in the function - rather something else!
You are going to have to share more info (i.e. export a flow or at minimum a screenshot)
Thank you @Steve-Mcl its working now without any errors. I figured out a fix for it and while the .json format was fine by itself , msg.payload could only be used with as a function block. when I try to use the same .json code in the inject node as a .json input itr gives me error unless I remove the msg.paylaod line and return.msg line.
I am trying to come up with a code or node red flow so that I'd be able to setup SparkplugB based MQTT protocol by making use of the ignition broker.
