以下是代码。
using JEMSS
# println(2+3)
filename = selectXmlFile()
sim = initSim(filename);
simulate!(sim) # run the simulation
printSimStats(sim) # some basic statistics
在运行此程序时，收到以下错误消息：
[ Info: Precompiling JEMSS [24979329-2a3d-50cf-82e3-05af2f1830ac]
┌ Warning: Deprecated syntax `@doc call with ->` at /Users/jack/.julia/packages/HttpServer/ZGldt/src/HttpServer.jl:229.
│ Use `a line break` instead.
└ @ ~/.julia/packages/HttpServer/ZGldt/src/HttpServer.jl:229
WARNING: importing deprecated binding Base.listen into HttpServer.
ERROR: LoadError: UndefVarError: TCPServer not defined
Stacktrace:
[1] getproperty(::Module, ::Symbol) at ./sysimg.jl:13
[2] top-level scope at none:0
[3] include at ./boot.jl:317 [inlined]
[4] include_relative(::Module, ::String) at ./loading.jl:1038
[5] include(::Module, ::String) at ./sysimg.jl:29
[6] top-level scope at none:2
[7] eval at ./boot.jl:319 [inlined]
[8] eval(::Expr) at ./client.jl:399
[9] top-level scope at ./none:3
in expression starting at /Users/nanal/.julia/packages/HttpServer/ZGldt/src/HttpServer.jl:31
ERROR: LoadError: Failed to precompile HttpServer [58cfbd8c-6b7d-5447-85c1-563540e28d27] to /Users/jack/.julia/compiled/v0.7/HttpServer/SC4ql.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:1185
[4] _require(::Base.PkgId) at ./logging.jl:311
[5] require(::Base.PkgId) at ./loading.jl:852
[6] macro expansion at ./logging.jl:311 [inlined]
[7] require(::Module, ::Symbol) at ./loading.jl:834
[8] include at ./boot.jl:317 [inlined]
[9] include_relative(::Module, ::String) at ./loading.jl:1038
[10] include(::Module, ::String) at ./sysimg.jl:29
[11] top-level scope at none:2
[12] eval at ./boot.jl:319 [inlined]
[13] eval(::Expr) at ./client.jl:399
[14] top-level scope at ./none:3
in expression starting at /Users/jack/.julia/dev/JEMSS/src/JEMSS.jl:20
我试图搜索以找出这"ERROR: LoadError: UndefVarError: TCPServer not defined"的确切含义，但找不到任何内容。谁能告诉我在哪里可以找到它的参考资料？非常感谢！