Loading texture into class

[Kvaz1r]

I think that's exactly the problem. Your project file contains this:

    <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
    <ClCompile>
      <WarningLevel>Level3</WarningLevel>
      <SDLCheck>true</SDLCheck>
      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
      <ConformanceMode>true</ConformanceMode>
      <AdditionalIncludeDirectories>C:\SFML-2.5.1\include</AdditionalIncludeDirectories>
      <LanguageStandard>stdcpp17</LanguageStandard>
    </ClCompile>
    <Link>
      <SubSystem>Console</SubSystem>
      <GenerateDebugInformation>true</GenerateDebugInformation>
      <AdditionalLibraryDirectories>C:\SFML-2.5.1\lib</AdditionalLibraryDirectories>
      <AdditionalDependencies>opengl32.lib;sfml-system.lib;sfml-window.lib;sfml-graphics.lib;sfml-main.lib;%(AdditionalDependencies)</AdditionalDependencies>
    </Link>
  </ItemDefinitionGroup>
 

For DEBUG it should have -d in the end (from the documentation):

Here are the dependencies of each module, append the -d as described above if you want to link the SFML debug libraries:
...
 link your project to the sfml-main module ("sfml-main-d.lib" in Debug, "sfml-main.lib" in Release),

[HaS3n]

Yes! They are right! Everything is working now! Thank you and Discord people! I really appreciate your help. Many thanks!