Hi there.
Another one:

The mod Quality Heat Pipes (1.0.2) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event quality-heat-pipes::on_robot_built_entity (ID 15)
Unknown entity name: legendary-legendary-heat-pipe
stack traceback:
[C]: in function 'create_entity'
quality-heat-pipes/control.lua:14: in function <quality-heat-pipes/control.lua:1>

Oh this one is more interesting as, what were you having your robots build?

I was testing your mod with the underground heat pipes mod (https://mods.factorio.com/mod/underground-heat-pipe?from=search) on Aquilo.
Legendary bots were building everything.
At first, I've built a few [underground] + [your legenedary pipe] + [another underground], the way I thought I would use it on Aquilo, to test everything. All seemed to work nicely.
Then I started to delete old (vanilla) heat pipes, replacing them with [underground] + [your legendary pipe] + [another underground], built a few sections, and at, maybe, 4-5 sections it failed.
Strange indeed. Please let me know if I can be of any help. Maybe test it again?

Let me know if the latest version helps, if not I'll look further into it