ERROR: UndefVarError: is_extension_loaded not defined in LuxLib.Impl

[KirillZubov]

  chain = Chain(
        Dense(2 => 10, Lux.tanh_fast), Dense(10 => 10, Lux.tanh_fast), Dense(10 => 1))
    x = rand(2, 200, 40)
    θ, st = Lux.setup(Random.default_rng(), chain)
    b = chain(x, θ, st)[1]

ERROR: UndefVarError: `is_extension_loaded` not defined in `LuxLib.Impl`
Suggestion: check for spelling errors or missing imports.
Stacktrace:
  [1] matmul_cpu_fallback!
    @ ~/.julia/packages/LuxLib/lNyvG/src/impl/matmul.jl:139 [inlined]
  [2] matmul_cpu!(C::Matrix{Float64}, ::Static.False, ::Static.False, A::Matrix{Float32}, B::Matrix{Float64})
    @ LuxLib.Impl ~/.julia/packages/LuxLib/lNyvG/src/impl/matmul.jl:121
  [3] matmul!
    @ ~/.julia/packages/LuxLib/lNyvG/src/impl/matmul.jl:90 [inlined]
  [4] fused_dense!
    @ ~/.julia/packages/LuxLib/lNyvG/src/impl/dense.jl:30 [inlined]
  [5] fused_dense
    @ ~/.julia/packages/LuxLib/lNyvG/src/impl/dense.jl:24 [inlined]
  [6] fused_dense
    @ ~/.julia/packages/LuxLib/lNyvG/src/impl/dense.jl:11 [inlined]
  [7] fused_dense_bias_activation
    @ ~/.julia/packages/LuxLib/lNyvG/src/api/dense.jl:35 [inlined]
  [8] (::Dense{…})(x::Array{…}, ps::@NamedTuple{…}, st::@NamedTuple{})
    @ Lux ~/.julia/packages/Lux/atwzZ/src/layers/basic.jl:343
  [9] apply
    @ ~/.julia/packages/LuxCore/IBKvY/src/LuxCore.jl:155 [inlined]
 [10] macro expansion
    @ ~/.julia/packages/Lux/atwzZ/src/layers/containers.jl:0 [inlined]
 [11] applychain
    @ ~/.julia/packages/Lux/atwzZ/src/layers/containers.jl:482 [inlined]
 [12] (::Chain{…})(x::Array{…}, ps::@NamedTuple{…}, st::@NamedTuple{…})
    @ Lux ~/.julia/packages/Lux/atwzZ/src/layers/containers.jl:480
 [13] top-level scope
    @ REPL[532]:1
Some type information was truncated. Use `show(err)` to see complete types.