# Error with NullableArrays when trying to install or remove packages or run Pkg.update()

**URL:** https://discourse.julialang.org/t/error-with-nullablearrays-when-trying-to-install-or-remove-packages-or-run-pkg-update/11225
**Category:** General Usage
**Tags:** error
**Created:** [May 29, 2018, 10:24am UTC](https://discourse.julialang.org/t/error-with-nullablearrays-when-trying-to-install-or-remove-packages-or-run-pkg-update/11225 "2018-05-29T10:24:13Z")
**Posts on this page:** 1
**Showing post:** 6

<div class="post-metadata">

### Author: ![Harsha](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/harsha/32/1985_2.png) [@Harsha](https://discourse.julialang.org/u/Harsha)
#### Post date: [May 30, 2018, 7:10am UTC](https://discourse.julialang.org/t/error-with-nullablearrays-when-trying-to-install-or-remove-packages-or-run-pkg-update/11225/6 "2018-05-30T07:10:38Z")

</div>

You can follow these steps to fix the package resolve issues in JuliaPro v0.6.2.2

- Open your JuliaPro command prompt and find the path of REQUIRE file by executing following command:

```julia
Pkg.dir("REQUIRE")

```

- Take a backup of REQUIRE file

- Open the REQUIRE file in a text editor of your choice and replace following line

`Compat 0.55.1 0.55.1+`

With

`Compat`

- Once you’ve saved above changes, execute following command in JuliaPro command prompt:

`Pkg.resolve()`

Just a heads up: - If you had installed JuliaPro with admin privileges, then you have to launch JuliaPro REPL (JuliaPro command prompt) as admin to perform last step.

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_[View the full topic](https://discourse.julialang.org/t/error-with-nullablearrays-when-trying-to-install-or-remove-packages-or-run-pkg-update/11225)._