Save failed with the error: " expected Type, got Type{Vararg{Any,N} where N}"

[mslichao]

I use BSON in Flux to save/load my model, it works well when I save the origin model. But it failed when I save the model which load from file.

Below is the code, the last line failed.

using BSON: @save, @load
a=1
@save "a.bson" a
@load "a.bson" a
@save "a.bson" a    # works well

using Flux
m = Dense(10, 5)
@save "m.bson" m    # works well
@load "m.bson" m
@save "m.bson" m    # TypeError: in Type, in parameter, expected Type, got Type{Vararg{Any,N} where N}

Stack trace:

Stacktrace:
 [1] typeof_ at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:50 [inlined]
 [2] _lower_recursive(::Type, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\packages\BSON\kx
dIr\src\write.jl:54
 [3] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Type) at D:\julia\.julia\p
ackages\BSON\kxdIr\src\write.jl:62
 [4] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Array{Any,1}
) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:28
 [5] _lower_recursive(::Array{UnionAll,1}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\pac
kages\BSON\kxdIr\src\write.jl:62
 [6] (::getfield(BSON, Symbol("##5#9")){IdDict{Any,Any},Array{Any,1}})(::Array{UnionAll,1}) at D:\ju
lia\.julia\packages\BSON\kxdIr\src\write.jl:53
 [7] applychildren!(::getfield(BSON, Symbol("##5#9")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol,A
ny}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [8] (::getfield(BSON, Symbol("#_lower#8")){IdDict{Any,Any},Array{Any,1}})(::Type) at D:\julia\.juli
a\packages\BSON\kxdIr\src\write.jl:53
 [9] _lower_recursive(::Type, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\packages\BSON\kx
dIr\src\write.jl:54
 [10] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Type) at D:\julia\.julia\
packages\BSON\kxdIr\src\write.jl:62
 [11] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Array{Any,1
}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:28
 [12] _lower_recursive(::Array{DataType,1}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\pa
ckages\BSON\kxdIr\src\write.jl:62
 [13] (::getfield(BSON, Symbol("##5#9")){IdDict{Any,Any},Array{Any,1}})(::Array{DataType,1}) at D:\j
ulia\.julia\packages\BSON\kxdIr\src\write.jl:53
 [14] applychildren!(::getfield(BSON, Symbol("##5#9")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol,
Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [15] (::getfield(BSON, Symbol("#_lower#8")){IdDict{Any,Any},Array{Any,1}})(::Type) at D:\julia\.jul
ia\packages\BSON\kxdIr\src\write.jl:53
 [16] _lower_recursive(::Type, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\packages\BSON\k
xdIr\src\write.jl:54
 [17] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Type) at D:\julia\.julia\
packages\BSON\kxdIr\src\write.jl:62
 [18] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol
,Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [19] _lower_recursive(::Flux.Tracker.Call{Nothing,Tuple}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\
julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [20] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Flux.Tracker.Call{Nothing
,Tuple}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [21] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Array{Any,1
}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:28
 [22] _lower_recursive(::Array{Any,1}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\package
s\BSON\kxdIr\src\write.jl:62
 [23] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Array{Any,1}) at D:\julia
\.julia\packages\BSON\kxdIr\src\write.jl:62
 [24] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol
,Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [25] _lower_recursive(::Flux.Tracker.Tracked{Array{Float64,2}}, ::IdDict{Any,Any}, ::Array{Any,1})
at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [26] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Flux.Tracker.Tracked{Arra
y{Float64,2}}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [27] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Array{Any,1
}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:28
 [28] _lower_recursive(::Array{Any,1}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\package
s\BSON\kxdIr\src\write.jl:62
 [29] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Array{Any,1}) at D:\julia
\.julia\packages\BSON\kxdIr\src\write.jl:62
 [30] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol
,Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [31] _lower_recursive(::TrackedArray{…,Array{Float64,2}}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:
\julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [32] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::TrackedArray{…,Array{Flo
at64,2}}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:62
 [33] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Array{Any,1
}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:28
 [34] _lower_recursive(::Array{Any,1}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\package
s\BSON\kxdIr\src\write.jl:62
 [35] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Array{Any,1}) at D:\julia
\.julia\packages\BSON\kxdIr\src\write.jl:62
 [36] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol
,Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [37] _lower_recursive(::Dense{typeof(identity),TrackedArray{…,Array{Float64,2}},TrackedArray{…,Ar
ray{Float64,1}}}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\packages\BSON\kxdIr\src\writ
e.jl:62
 [38] (::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}})(::Dense{typeof(identity),Tr
ackedArray{…,Array{Float64,2}},TrackedArray{…,Array{Float64,1}}}) at D:\julia\.julia\packages\BSON
\kxdIr\src\write.jl:62
 [39] applychildren!(::getfield(BSON, Symbol("##7#11")){IdDict{Any,Any},Array{Any,1}}, ::Dict{Symbol
,Any}) at D:\julia\.julia\packages\BSON\kxdIr\src\BSON.jl:21
 [40] _lower_recursive(::Dict{Symbol,Dense{typeof(identity),TrackedArray{…,Array{Float64,2}},Tracke
dArray{…,Array{Float64,1}}}}, ::IdDict{Any,Any}, ::Array{Any,1}) at D:\julia\.julia\packages\BSON\k
xdIr\src\write.jl:62
 [41] lower_recursive(::Dict{Symbol,Dense{typeof(identity),TrackedArray{…,Array{Float64,2}},Tracked
Array{…,Array{Float64,1}}}}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:73
 [42] bson(::IOStream, ::Dict{Symbol,Dense{typeof(identity),TrackedArray{…,Array{Float64,2}},Tracke
dArray{…,Array{Float64,1}}}}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:81
 [43] #14 at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:83 [inlined]
 [44] #open#294(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::Function,
::getfield(BSON, Symbol("##14#15")){Dict{Symbol,Dense{typeof(identity),TrackedArray{…,Array{Float64
,2}},TrackedArray{…,Array{Float64,1}}}}}, ::String, ::Vararg{String,N} where N) at .\iostream.jl:36
9
 [45] open at .\iostream.jl:367 [inlined]
 [46] bson(::String, ::Dict{Symbol,Dense{typeof(identity),TrackedArray{…,Array{Float64,2}},TrackedA
rray{…,Array{Float64,1}}}}) at D:\julia\.julia\packages\BSON\kxdIr\src\write.jl:83
 [47] top-level scope at none:0