Errors when testing unregistered custom package (because of non-ASCII characters, it seems)

Tooling Package Management
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8

Not at all, same error as before!

For information, here are the full Project.toml files:

Project.toml:

name = "MyPackage"
uuid = "…"
authors = ["me"]
version = "0.1.0"

[deps]
Cascadia = "54eefc05-d75b-58de-a785-1a3403f0919f"
DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
FilePaths = "8fc22ac5-c921-52a6-82fd-178b2807b824"
Gumbo = "708ec375-b3d6-5a57-a7ce-8257bf98657a"
HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"
JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
LibPQ = "194296ae-ab2e-5f79-8cd4-7183a0a5a0d1"
LightXML = "9c8b4983-aa76-5018-a973-4c85ecc9e179"
Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
LoggingExtras = "e6f89c97-d47a-5376-807f-9c37f3926c36"
YAML = "ddb6d928-2868-570f-bddf-ab3f9cf99eb6"
ZipFile = "a5390f91-8eb1-5f08-bee0-b1d1ffed6cea"

test/Project.toml:

[deps]
DataFrames = "a93c6f00-e57d-5684-b7b6-d8193f3e46c0"
FilePaths = "8fc22ac5-c921-52a6-82fd-178b2807b824"
LibPQ = "194296ae-ab2e-5f79-8cd4-7183a0a5a0d1"
Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"