# "Could not find the package with 'me-no-dev/ESP Async WebServer @ ^1.2.3'" when compiling example

**URL:** <https://forum.unphone.net/t/could-not-find-the-package-with-me-no-dev-esp-async-webserver-1-2-3-when-compiling-example/70>\
**Category:** unPhone programming\
**Created:** [9 April 2025 19:48 UTC](https://forum.unphone.net/t/could-not-find-the-package-with-me-no-dev-esp-async-webserver-1-2-3-when-compiling-example/70 "2025-04-09T19:48:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ben](https://avatars.discourse-cdn.com/v4/letter/b/df788c/32.png) [@ben](https://forum.unphone.net/u/ben)\
**Post date:** [9 April 2025 19:48 UTC](https://forum.unphone.net/t/could-not-find-the-package-with-me-no-dev-esp-async-webserver-1-2-3-when-compiling-example/70/1 "2025-04-09T19:48:15Z")

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Hi,

When attempting to compile the “everything” example I receive the below error. This seems to be because the dependency is no longer available.

```auto
Library Manager: Installing me-no-dev/ESP Async WebServer @ ^1.2.3
UnknownPackageError: Could not find the package with 'me-no-dev/ESP Async WebServer @ ^1.2.3' requirements for your system 'linux_x86_64'

```

The “minimal” example compiles and runs correctly, but the “factory-test” and “lvgl-demo” also fail to compile with the same error.

Platform: Linux  
Build method: docker container using hamishcunningham/iot:magic

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<div class="post-metadata">

**Author:** ![ben](https://avatars.discourse-cdn.com/v4/letter/b/df788c/32.png) [@ben](https://forum.unphone.net/u/ben)\
**Post date:** [9 April 2025 20:24 UTC](https://forum.unphone.net/t/could-not-find-the-package-with-me-no-dev-esp-async-webserver-1-2-3-when-compiling-example/70/2 "2025-04-09T20:24:30Z")

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Update: the issue was resolved by changing the references to “ESP Async WebServer” with “ESPAsyncWebServer” inside the platformio.ini file.

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<div class="post-metadata">

**Author:** ![hamish](https://dub1.discourse-cdn.com/flex017/user_avatar/forum.unphone.net/hamish/32/3_2.png) [@hamish](https://forum.unphone.net/u/hamish)\
**Post date:** [17 April 2025 08:04 UTC](https://forum.unphone.net/t/could-not-find-the-package-with-me-no-dev-esp-async-webserver-1-2-3-when-compiling-example/70/3 "2025-04-17T08:04:41Z")

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If I had a pound for every time spaces in file names caused problems I’d have enough to buy Windows and delete it… Maybe 🙂