VS 2019 CMake looking for file it is not supposed to - c++

Question

I run into a problem when building a Cmake Project with CmakeLists.txt in VS 2019.
It tells me this:
What I did before the error:
I created a tests folder
I created a test.cpp file
A Pop up window opened from Cmake -> asking if I want to add it automatically to add_executable, I declined it
I manually added it to the Project Sources with tests/test.cpp
test got highlighted blue, so I changed the name to sample_test.cpp
rewrote test.cppp to sample_test.cpp
build CmakeLists.txt
error
I hope the provided information is enough otherwise let me know and thanks in advance!
What I tried:
deleting the cache
deleting the out file
deleting CMakeSettings.Json
repaired VS 2019
uninstalled CMake and reinstalled
Added the "ghost" file -> results in same error message
deleted repo and cloned it in a completely new directory
deleted .vs file
reinstalling VS 2019
deleting VS with InstallCleanup.exe, removed every VS file and reinstalled
Good to know:
On a colleagues machine it build without problems, so on his machine Cmake doesn't look for this file. So the problem seems to be locally on the machine.
Also I do not want this file and folder anymore, I have deleted it and somehow CMake is still looking for it.
cmake_minimum_required(VERSION 3.5)
project(team1 VERSION 0.1 LANGUAGES CXX)
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
find_package(QT NAMES Qt6 Qt5 REQUIRED COMPONENTS Widgets)
find_package(Qt${QT_VERSION_MAJOR} REQUIRED COMPONENTS Widgets)
find_package(OpenCV REQUIRED)
find_package(PCL REQUIRED COMPONENTS common visualization io)
set(PROJECT_SOURCES
main.cpp
mainwindow.cpp mainwindow.h mainwindow.ui
userinterface.h userinterface.cpp
fileviewer.h fileviewer.cpp
segmentcreator.h segmentcreator.cpp
filerepresentation.h filerepresentation.cpp
filehandler.h filehandler.cpp
utils/utils.cpp utils/utils.h
)
if(${QT_VERSION_MAJOR} GREATER_EQUAL 6)
qt_add_executable(${PROJECT_NAME}
MANUAL_FINALIZATION
${PROJECT_SOURCES}
)
else()
if(ANDROID)
add_library(${PROJECT_NAME} SHARED
${PROJECT_SOURCES}
)
# Define properties for Android with Qt 5 after find_package() calls as:
else()
add_executable(${PROJECT_NAME}
${PROJECT_SOURCES}
)
endif()
endif()
target_link_libraries(${PROJECT_NAME}
PRIVATE Qt${QT_VERSION_MAJOR}::Widgets
${OpenCV_LIBS}
${PCL_LIBRARIES}
)
set_target_properties(${PROJECT_NAME} PROPERTIES
MACOSX_BUNDLE_GUI_IDENTIFIER my.example.com
MACOSX_BUNDLE_BUNDLE_VERSION ${PROJECT_VERSION}
MACOSX_BUNDLE_SHORT_VERSION_STRING ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
MACOSX_BUNDLE TRUE
WIN32_EXECUTABLE TRUE
)
install(TARGETS ${PROJECT_NAME}
BUNDLE DESTINATION .
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
target_include_directories(${PROJECT_NAME} PUBLIC
${OpenCV_INCLUDE_DIRS}
)
target_link_directories(${PROJECT_NAME} PUBLIC
${PCL_LIBRARY_DIRS}
${OpenCV_LIBRARY_DIRS}
)
add_definitions(${PCL_DEFINITIONS})
if(QT_VERSION_MAJOR EQUAL 6)
qt_finalize_executable(${PROJECT_NAME})
endif()

Answer 1

I found a solution. I reinstalled Qt and it worked. I don't know if Qt somehow caches the files that are supposed to be used in a project, but reinstalling it at least made the CMake generate again without errors.
Maybe someone knows more about what Qt does there, I am curious to know.