# 'Swift Run' Server Error - PackageDescription

**URL:** <https://forums.kodeco.com/t/swift-run-server-error-packagedescription/181711>\
**Category:** Modern Concurrency in Swift\
**Created:** [December 15, 2022, 2:48am UTC](https://forums.kodeco.com/t/swift-run-server-error-packagedescription/181711 "2022-12-15T02:48:09Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![aebrahimi](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/aebrahimi/32/108488_2.png) [@aebrahimi](https://forums.kodeco.com/u/aebrahimi)\
**Post date:** [December 15, 2022, 2:48am UTC](https://forums.kodeco.com/t/swift-run-server-error-packagedescription/181711/1 "2022-12-15T02:48:09Z")

</div>

I am getting the following error with macOS 12.5.1 and Xcode 14.1:

When I clone the book materials down and attempt to run `swift run`, it outputs:

```auto
'00-book-server': Invalid manifest
Package.swift:2:8: error: no such module 'PackageDescription'
import PackageDescription

```

`swift -v` returns:

```auto
Apple Swift version 5.7.1 (swiftlang-5.7.1.135.3 clang-1400.0.29.51)

```

What have I missed here?