Не собирается проект qt creator?

Question

[Евгений Петряев]

Использую проект для отправки почты https://github.com/bluetiger9/SmtpClient-for-Qt
Делал по данному гайду https://www.youtube.com/watch?v=Ly8FzkNukrE
Получил ошибку

mimebytearrayattachment.cpp:4: ошибка: undefined reference to `_imp___ZTV23MimeByteArrayAttachment'
ошибка: collect2.exe: error: ld returned 1 exit status

Не пойму в какую сторону смотреть
Файл .pro

QT       += core gui network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS SMTP_BUILD

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    emailaddress.cpp \
    main.cpp \
    mainwindow.cpp \
    mimeattachment.cpp \
    mimebase64encoder.cpp \
    mimebase64formatter.cpp \
    mimebytearrayattachment.cpp \
    mimecontentencoder.cpp \
    mimecontentformatter.cpp \
    mimefile.cpp \
    mimehtml.cpp \
    mimeinlinefile.cpp \
    mimemessage.cpp \
    mimemultipart.cpp \
    mimepart.cpp \
    mimeqpencoder.cpp \
    mimeqpformatter.cpp \
    mimetext.cpp \
    quotedprintable.cpp \
    smtpclient.cpp

HEADERS += \
    SmtpMime \
    emailaddress.h \
    mainwindow.h \
    mimeattachment.h \
    mimebase64encoder.h \
    mimebase64formatter.h \
    mimebytearrayattachment.h \
    mimecontentencoder.h \
    mimecontentformatter.h \
    mimefile.h \
    mimehtml.h \
    mimeinlinefile.h \
    mimemessage.h \
    mimemultipart.h \
    mimepart.h \
    mimeqpencoder.h \
    mimeqpformatter.h \
    mimetext.h \
    quotedprintable.h \
    smtpclient.h \
    smtpmime_global.h

FORMS += \
    mainwindow.ui

TRANSLATIONS += \
    SMTP_QT_ru_RU.ts

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

# Location of SMTP Library
SMTP_LIBRARY_LOCATION = $$PWD/../build-SMTP_QT-desktop_mingw-Debug/

win32:CONFIG(release, debug|release): LIBS += -L$$SMTP_LIBRARY_LOCATION/release/ -lSmtpMime2
else:win32:CONFIG(debug, debug|release): LIBS += -L$$SMTP_LIBRARY_LOCATION/debug/ -lSmtpMime2
else:unix: LIBS += -L$$SMTP_LIBRARY_LOCATION -lSmtpMime

INCLUDEPATH += $$SMTP_LIBRARY_LOCATION
DEPENDPATH += $$SMTP_LIBRARY_LOCATION