# \#unknown-function

**URL:** https://discourse.julialang.org/tag/unknown-function/954.md

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## [@mtkcompile / System(...): unknowns and required u0 change when I rename a component](https://discourse.julialang.org/t/mtkcompile-system-unknowns-and-required-u0-change-when-i-rename-a-component/136071)

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**Author:** [@celia.bat](https://discourse.julialang.org/u/celia.bat)\
**Replies:** 4\
**Last updated:** [March 18, 2026, 4:33pm UTC](https://discourse.julialang.org/t/mtkcompile-system-unknowns-and-required-u0-change-when-i-rename-a-component/136071 "2026-03-18T16:33:55Z")

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Hi everyone, I am working with a fairly large ModelingToolkit model built from components. I compile it with something like: @mtkcompile sys = System(assembly, t; systems = elements) where elements is the list of the …

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## [Mysterious error message when terminating a HTTP.jl server](https://discourse.julialang.org/t/mysterious-error-message-when-terminating-a-http-jl-server/76687)

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**Author:** [@xor0110](https://discourse.julialang.org/u/xor0110)\
**Replies:** 0\
**Last updated:** [February 18, 2022, 10:13am UTC](https://discourse.julialang.org/t/mysterious-error-message-when-terminating-a-http-jl-server/76687 "2022-02-18T10:13:35Z")

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Julia 1.7.2 HTTP.jl 0.9.17 I’m using HTTP.jl to write a microservice running on GCP Cloud Run. I noticed in the logs that when the process is terminated an error message shows up, apart from the “Terminated” message: s…