# I couldn't debug codes that ran normally

**URL:** <https://discourse.julialang.org/t/i-couldnt-debug-codes-that-ran-normally/82311>\
**Category:** General Usage\
**Tags:** debug\
**Created:** [June 6, 2022, 12:43pm UTC](https://discourse.julialang.org/t/i-couldnt-debug-codes-that-ran-normally/82311 "2022-06-06T12:43:19Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ouyuan](https://avatars.discourse-cdn.com/v4/letter/o/bbe5ce/32.png) [@Ouyuan](https://discourse.julialang.org/u/Ouyuan)\
**Post date:** [June 6, 2022, 12:43pm UTC](https://discourse.julialang.org/t/i-couldnt-debug-codes-that-ran-normally/82311/1 "2022-06-06T12:43:19Z")

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I could run my code correctly. But when I wanted to debugger and check some variables, it seemed that the debugger couldn’t get through function fft! in the FFTW package. The debugger broke down in FFTW package and I couldn’t figure it out. What’s the problem? Is there anything wrong with JuliaInterpreter package?

```julia
ERROR: TypeError: in typeassert, expected Core.SimpleVector, got a value of type Int64
Stacktrace:
 [1] evaluate_call_recurse!(recurse::Any, frame::JuliaInterpreter.Frame, call_expr::Expr; enter_generated::Bool)  
   @ JuliaInterpreter C:\Users\Ouyuan\.julia\packages\JuliaInterpreter\Q7nmG\src\interpret.jl:238
 [2] evaluate_call_recurse!
   @ C:\Users\Ouyuan\.julia\packages\JuliaInterpreter\Q7nmG\src\interpret.jl:227 [inlined]
 [3] eval_rhs(recurse::Any, frame::JuliaInterpreter.Frame, node::Expr)
   @ JuliaInterpreter C:\Users\Ouyuan\.julia\packages\JuliaInterpreter\Q7nmG\src\interpret.jl:399

```

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<div class="post-metadata">

**Author:** ![Ouyuan](https://avatars.discourse-cdn.com/v4/letter/o/bbe5ce/32.png) [@Ouyuan](https://discourse.julialang.org/u/Ouyuan)\
**Post date:** [June 6, 2022, 1:27pm UTC](https://discourse.julialang.org/t/i-couldnt-debug-codes-that-ran-normally/82311/2 "2022-06-06T13:27:38Z")

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I deleted the current Julia and its packages totally and installed it from scratch. The problems are gone now. Maybe I installed Julia v1.7 before the already existing Julia v1.6 or something…