module `main:Log' is defined in multiple files (duplicated file)

### General summary/comments (optional)

This error was resolved after deleting the .stack-work directory and rebuilding.

### Steps to reproduce

`stack -v ghci app:exe:pitangaLog`

hpack file

```
source-dirs: src
executables:
pitangaStartTask:
main: Main.startLog
pitangaStopTask:
main: StopTask.main
pitangaResumeTask:
main: ResumeTask.resumeTask
pitangaLog:
main: Log.showLog
pitangaExport:
main: Export.main
license-file: LICENSE
build-type: Simple
maintainer: Chris Stryczynski
dependencies:
- base >=4.11 && <4.12
- turtle
- aeson-pretty
# common
- rainbow
- lens
- aeson
- bytestring
- stm
- split
- text
- time
- thyme
- binary
- binary-orphans
- old-locale
- directory
- pretty-simple
- string-conversions
- optparse-applicative
name: app
version: '0.1.0.0'
extra-source-files: ChangeLog.md
author: Chris Stryczynski
license: BSD3
default-extensions:
- LambdaCase
```

cabal file

```
cabal-version: 1.12

-- This file has been generated from package.yaml by hpack version 0.31.1.
--
-- see: https://github.com/sol/hpack
--
-- hash: b53f54561fe46ea5b3de132681abd6fca663a34f3a0396d65575f109b88c86fa

name: app
version: 0.1.0.0
author: Chris Stryczynski
maintainer: Chris Stryczynski
license: BSD3
license-file: LICENSE
build-type: Simple
extra-source-files:
ChangeLog.md

executable pitangaExport
main-is: Export.hs
other-modules:
Common
Log
Main
MyDebug
ResumeTask
StopTask
Paths_app
hs-source-dirs:
src
default-extensions: LambdaCase
ghc-options: -main-is Export.main
build-depends:
aeson
, aeson-pretty
, base >=4.11 && <4.12
, binary
, binary-orphans
, bytestring
, directory
, lens
, old-locale
, optparse-applicative
, pretty-simple
, rainbow
, split
, stm
, string-conversions
, text
, thyme
, time
, turtle
default-language: Haskell2010

executable pitangaLog
main-is: Log.hs
other-modules:
Common
Export
Main
MyDebug
ResumeTask
StopTask
Paths_app
hs-source-dirs:
src
default-extensions: LambdaCase
ghc-options: -main-is Log.showLog
build-depends:
aeson
, aeson-pretty
, base >=4.11 && <4.12
, binary
, binary-orphans
, bytestring
, directory
, lens
, old-locale
, optparse-applicative
, pretty-simple
, rainbow
, split
, stm
, string-conversions
, text
, thyme
, time
, turtle
default-language: Haskell2010

executable pitangaResumeTask
main-is: ResumeTask.hs
other-modules:
Common
Export
Log
Main
MyDebug
StopTask
Paths_app
hs-source-dirs:
src
default-extensions: LambdaCase
ghc-options: -main-is ResumeTask.resumeTask
build-depends:
aeson
, aeson-pretty
, base >=4.11 && <4.12
, binary
, binary-orphans
, bytestring
, directory
, lens
, old-locale
, optparse-applicative
, pretty-simple
, rainbow
, split
, stm
, string-conversions
, text
, thyme
, time
, turtle
default-language: Haskell2010

executable pitangaStartTask
main-is: Main.hs
other-modules:
Common
Export
Log
MyDebug
ResumeTask
StopTask
Paths_app
hs-source-dirs:
src
default-extensions: LambdaCase
ghc-options: -main-is Main.startLog
build-depends:
aeson
, aeson-pretty
, base >=4.11 && <4.12
, binary
, binary-orphans
, bytestring
, directory
, lens
, old-locale
, optparse-applicative
, pretty-simple
, rainbow
, split
, stm
, string-conversions
, text
, thyme
, time
, turtle
default-language: Haskell2010

executable pitangaStopTask
main-is: StopTask.hs
other-modules:
Common
Export
Log
Main
MyDebug
ResumeTask
Paths_app
hs-source-dirs:
src
default-extensions: LambdaCase
ghc-options: -main-is StopTask.main
build-depends:
aeson
, aeson-pretty
, base >=4.11 && <4.12
, binary
, binary-orphans
, bytestring
, directory
, lens
, old-locale
, optparse-applicative
, pretty-simple
, rainbow
, split
, stm
, string-conversions
, text
, thyme
, time
, turtle
default-language: Haskell2010
```

### Expected

An error to be reported relating to an unrelated type error.

### Actual

Truncated output (full output: https://gist.github.com/chrissound/dcf79033dd139fe78b5cd95b7ec75d49):

```
stack -v ghci app:exe:pitangaLog
...
Loaded GHCi configuration from /home/chris/mount/home/chrisnixtrans/Haskell/PlatinumPitanga/.ghci

: error:
module `main:Log' is defined in multiple files: /home/chris/mount/home/chrisnixtrans/Haskell/PlatinumPitanga/src/Log.hs
/home/chris/mount/home/chrisnixtrans/Haskell/PlatinumPitanga/src/Log.hs
Failed, no modules loaded.

: error:
Could not find module `Common'
It is not a module in the current program, or in any known package.
Loaded GHCi configuration from /run/user/1000/haskell-stack-ghci/e978a431/ghci-script

```

### Stack version

```
stack --version
1.9.3 x86_64 hpack-0.31.1
```

### Method of installation

* nixos