syntax: extra token "AbstractStateSpaceModel" after end of expression

[RenieWell]

When I trying to use StateSpace by using SateSpace, it came out error like this

julia>
using StateSpace
[ Info: Precompiling StateSpace [0ba9688b-42e4-5021-a424-b4045c67a13a]
WARNING: could not import Base.mean into StateSpace
┌ Warning: Package StateSpace does not have StatsBase in its dependencies:
│ - If you have StateSpace checked out for development and have
│ added StatsBase as a dependency but haven't updated your primary
│ environment's manifest file, try Pkg.resolve().
│ - Otherwise you may need to report an issue with StateSpace
└ Loading StatsBase into StateSpace from project dependency, future warnings for StateSpace are suppressed.
ERROR: LoadError: LoadError: syntax: extra token "AbstractStateSpaceModel" after end of expression
Stacktrace:
[1] include at .\boot.jl:317 [inlined]
[2] include_relative(::Module, ::String) at .\loading.jl:1041
[3] include at .\sysimg.jl:29 [inlined]
[4] include(::String) at C:\Users\Well.julia\dev\StateSpace\src\StateSpace.jl:1
[5] top-level scope at none:0
[6] include at .\boot.jl:317 [inlined]
[7] include_relative(::Module, ::String) at .\loading.jl:1041
[8] include(::Module, ::String) at .\sysimg.jl:29
[9] top-level scope at none:2
[10] eval at .\boot.jl:319 [inlined]
[11] eval(::Expr) at .\client.jl:389
[12] top-level scope at .\none:3
in expression starting at C:\Users\Well.julia\dev\StateSpace\src\model_types.jl:1
in expression starting at C:\Users\Well.julia\dev\StateSpace\src\StateSpace.jl:49
ERROR: Failed to precompile StateSpace [0ba9688b-42e4-5021-a424-b4045c67a13a] to C:\Users\Well.julia\compiled\v1.0\StateSpace\S4yKz.ji.
Stacktrace:
[1] error(::String) at .\error.jl:33
[2] macro expansion at .\logging.jl:313 [inlined]
[3] compilecache(::Base.PkgId, ::String) at .\loading.jl:1187
[4] _require(::Base.PkgId) at .\logging.jl:311
[5] require(::Base.PkgId) at .\loading.jl:855
[6] macro expansion at .\logging.jl:311 [inlined]
[7] require(::Module, ::Symbol) at .\loading.jl:837"

It seams like some problems in the model_types.jl.
I'm new to Julia, can your help me out?

[qinmo2019]

I have same problems. so, I want to ask you to give me some help. Thanks