# Invalid byte sequence in UTF-8 (ArgumentError) with ocra gem on windows 10 machine

**URL:** <https://www.ruby-forum.com/t/invalid-byte-sequence-in-utf-8-argumenterror-with-ocra-gem-on-windows-10-machine/263096>\
**Category:** Uncategorized\
**Created:** [July 25, 2022, 3:23pm UTC](https://www.ruby-forum.com/t/invalid-byte-sequence-in-utf-8-argumenterror-with-ocra-gem-on-windows-10-machine/263096 "2022-07-25T15:23:28Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![flo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/f/b38774/32.png) [@flo](https://www.ruby-forum.com/u/flo)\
**Post date:** [July 25, 2022, 3:23pm UTC](https://www.ruby-forum.com/t/invalid-byte-sequence-in-utf-8-argumenterror-with-ocra-gem-on-windows-10-machine/263096/1 "2022-07-25T15:23:28Z")

</div>

Hi,

I just downloaded ruby devkit 3.1.2-1 and i created a sample hello word script like that:

```auto
#!/usr/bin/env ruby

puts "Hello world"

```

Then in installed the ocra gem because i want to convert my ruby script to an executable.I have the following errors when i try to convert it

 ![ruby](https://www.ruby-forum.com/uploads/default/original/2X/9/9886fd5690084e7d5dfd0867d8c1dfee6ad9c0a2.png)

Is this possible to convert a ruby scrypt o an .exe file ? What im missing ?

Thanks