# Is sum function broken?

**URL:** https://discourse.julialang.org/t/is-sum-function-broken/52146
**Category:** New to Julia
**Tags:** question
**Created:** [December 20, 2020, 8:14pm UTC](https://discourse.julialang.org/t/is-sum-function-broken/52146 "2020-12-20T20:14:17Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![acastrauss](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/acastrauss/32/20417_2.png) [@acastrauss](https://discourse.julialang.org/u/acastrauss)
#### Post date: [December 20, 2020, 8:14pm UTC](https://discourse.julialang.org/t/is-sum-function-broken/52146/1 "2020-12-20T20:14:17Z")

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Recently installed version 1.5.3 and I get this error when trying sum function:  
 ![julia](https://global.discourse-cdn.com/julialang/original/3X/f/3/f39803b128bebd243b7c1fe88a63149c3a133b5f.png)  
Also tried with dot (‘.’) and with dims as second argument, but nothing worked.  
prod(A) would work for example  
Does anyone have an idea what is this about?  
Thanks in advance.

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### Author: ![affans](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/affans/32/11911_2.png) [@affans](https://discourse.julialang.org/u/affans)
#### Post date: [December 20, 2020, 8:17pm UTC](https://discourse.julialang.org/t/is-sum-function-broken/52146/2 "2020-12-20T20:17:31Z")

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Can you restart your REPL? It sounds like you have re-defined `sum` somewhere.

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### Author: ![stillyslalom](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/stillyslalom/32/45687_2.png) [@stillyslalom](https://discourse.julialang.org/u/stillyslalom)
#### Post date: [December 20, 2020, 8:17pm UTC](https://discourse.julialang.org/t/is-sum-function-broken/52146/3 "2020-12-20T20:17:42Z")

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I’m guessing you used `sum` as the name of a variable earlier in your script.

```julia
julia> sum = 1 + 2
3

julia> sum([1, 2])
ERROR: MethodError: objects of type Int64 are not callable
Stacktrace:
 [1] top-level scope at REPL[6]:1

julia> Base.sum([1, 2])
3

```

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<div class="post-metadata">

### Author: ![acastrauss](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/acastrauss/32/20417_2.png) [@acastrauss](https://discourse.julialang.org/u/acastrauss)
#### Post date: [December 20, 2020, 8:25pm UTC](https://discourse.julialang.org/t/is-sum-function-broken/52146/4 "2020-12-20T20:25:35Z")

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@affans @stillyslalom Thanks, you are right. God I feel stupid now haha 😃