KeyError on the first time I import my (in development) package with Revise

General Usage
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1

I am developing a package that uses PythonCall.

The first time I import my package I get the error:

ERROR: InitError: KeyError: key Base.PkgId(Base.UUID("6099a3de-0909-46bc-b1f4-468b9a2dfc0d"), "PythonCall") not found
Stacktrace:
  [1] getindex
    @ ./dict.jl:477 [inlined]
  [2] macro expansion
    @ ./lock.jl:273 [inlined]
  [3] root_module(key::Base.PkgId)
    @ Base ./loading.jl:2471
  [4] parse_pkg_files(id::Base.PkgId)
    @ Revise ~/.julia/packages/Revise/uvGMC/src/loading.jl:49
  [5] watch_package(id::Base.PkgId)
    @ Revise ~/.julia/packages/Revise/uvGMC/src/pkgs.jl:350
  [6] add_require(sourcefile::String, modcaller::Module, idmod::String, modname::String, expr::Expr)
    @ Revise ~/.julia/packages/Revise/uvGMC/src/pkgs.jl:189
  [7] withnotifications(::Any, ::Vararg{Any})
    @ Requires ~/.julia/packages/Requires/1eCOK/src/require.jl:70
  [8] (::PythonCall.Compat.var"#24#27")()
    @ PythonCall.Compat ~/.julia/packages/Requires/1eCOK/src/require.jl:106
  [9] listenpkg(f::Any, pkg::Base.PkgId)
    @ Requires ~/.julia/packages/Requires/1eCOK/src/require.jl:20
 [10] macro expansion
    @ ~/.julia/packages/Requires/1eCOK/src/require.jl:98 [inlined]
 [11] init_tables()
    @ PythonCall.Compat ~/.julia/packages/PythonCall/WMWY0/src/Compat/tables.jl:69
 [12] __init__()
    @ PythonCall.Compat ~/.julia/packages/PythonCall/WMWY0/src/Compat/Compat.jl:39
 [13] run_module_init(mod::Module, i::Int64)
    @ Base ./loading.jl:1378
 [14] register_restored_modules(sv::Core.SimpleVector, pkg::Base.PkgId, path::String)
    @ Base ./loading.jl:1366
 [15] _include_from_serialized(pkg::Base.PkgId, path::String, ocachepath::String, depmods::Vector{…}, ignore_native::Nothing; register::Bool)
    @ Base ./loading.jl:1254
 [16] _include_from_serialized (repeats 2 times)
    @ ./loading.jl:1210 [inlined]
 [17] _require_search_from_serialized(pkg::Base.PkgId, sourcepath::String, build_id::UInt128, stalecheck::Bool; reasons::Dict{…}, DEPOT_PATH::Vector{…})
    @ Base ./loading.jl:2041
 [18] _require(pkg::Base.PkgId, env::String)
    @ Base ./loading.jl:2527
 [19] __require_prelocked(uuidkey::Base.PkgId, env::String)
    @ Base ./loading.jl:2388
 [20] #invoke_in_world#3
    @ ./essentials.jl:1089 [inlined]
 [21] invoke_in_world
    @ ./essentials.jl:1086 [inlined]
 [22] _require_prelocked(uuidkey::Base.PkgId, env::String)
    @ Base ./loading.jl:2375
 [23] macro expansion
    @ ./loading.jl:2314 [inlined]
 [24] macro expansion
    @ ./lock.jl:273 [inlined]
 [25] __require(into::Module, mod::Symbol)
    @ Base ./loading.jl:2271
 [26] #invoke_in_world#3
    @ ./essentials.jl:1089 [inlined]
 [27] invoke_in_world
    @ ./essentials.jl:1086 [inlined]
 [28] require(into::Module, mod::Symbol)
    @ Base ./loading.jl:2260
during initialization of module Compat
Some type information was truncated. Use `show(err)` to see complete types.

Then, if I import it again, it works.

Any hints where to look at ?

EDIT:

This happens only if I use Revise before, otherwise it works on the first “attempt”