Node Red on fresh 3.50 & 3.62 gives TypeErrors for all Victron nodes on imported flow

Node-RED
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1

I wanted to test a working flow with 20 or so nodes (mainly victron ones) for distribution to some other boaters. On V3.50 (after exporting the flow) I did a “Node-RED factory reset” and imported the flow. Once I deployed it I got the following error emitted from all the Victron nodes (but not the standard ones):

7/1/2025, 2:13:46 PMnode: Relay 2 (water heater)
msg : error. “TypeError: Cannot read properties of null (reading ‘client’)”

And in the browser console
[Error] TypeError: undefined is not an object (evaluating ‘o._source.path.length’)
(anonymous function) (debug-utils.js:418)
handle (vendor.js:2:46668)
dispatch (vendor.js:2:43096)

Although this may be related to “Node Red on 3.60 Fresh Install Invalid Property” post earlier, that workaround didn’t help so I have put this in a new post. In this case, the workaround I found was to first install one of the victron built-in demo flows (e.g. Custom control reboot), Deploy it then disable and delete it. After that I could re-import my flow and successfully deploy it.

Just did the same things with 3.62 with the same result

2

I experience the same issue now on 3.70~6 and 3.70~7 after an update to 3.70~7.

3

Is this different to the issue requiring a new victron node to be deployed, accepting the errors on deploy, after which the nodes all work again?

4

After removing the virtual device node, deploy and undoing the removal with crtl-z followed by a deploy it works again..

5

This has been mentioned a few times on this section in other topics.
You can just deploy a new node, click through the deploy errors and the rest should recover.