Why does Mathematica says it didn't create a context when Needs was evaluated but it does?

Question

In Mathematica 14.0.0 (MacOS Sonoma 14.4.1) I made a simple package consisting of two "sub packages". One of them is loaded as "private" from with the main package:

The package structure is in the subdirectory LP in my user directory (MacOS /Users/twan:

LP/
   Kernel/
       init.wl
   Main.wl
   Sub.wl

The contents of the files is as follows: For init.wl:

(* ::Package:: *)

Get["LP`Main`"]

For Main.wl:

(* ::Package:: *)

BeginPackage["LP`Main`"]

dummy::usage = "dummy[s] with s a string to be formatted by the format function in LP`Sub"

Begin["`Private`"]

Needs["LP`Sub`"]

dummy[s_] := subformat[s]

End[]

EndPackage[]

For Sub.wl:

(* ::Package:: *)

BeginPackage["LP`Sub`"]

subformat::usage = "subformat[s] format string s, say, to uppercase"

Begin["`Private`"]

subformat[s_]:= ToUpperCase[s]

End[]
EndPackage[]

When I do: FindFile["LP"]` the function returns with "/Users/twan/LP/Kernel/init.wl" as expected.

However, when I do: Needs["LP"]` it complains:

I've no clue what has gone wrong, because everything seems to work. Checking the $ContextPath gives: "LPMain, ..." as desired, moreover, dummy works as expected.

dummy["test"]
TEST

My questions are:

1. What and why does Mathematica complains with the message?
2. Except from Off[Needs::nocont], what do I do to prevent this?

This is a very simplified version of my big project and it behaves a bit different but with a similar annoyance: the same message occurs when Main.wl loads Sub.wl.

Thanks for reading this far anyway.