UE4 Project could not be compiled

Hello, I’ve recently encountered a problem that prevents me from continuing to work on a project I’ve been working on for university, and it already has a lot of stuff.
Yesterday I was working on the project for about 4h, when i tried adding a C++ component, then UE4 asked me to reboot the project so it could compile properly, so I did. Now when I try opening the project it shows me this error message box.

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Can someone help me please? It is really urgent because the project is due in a week.
Thanks in advance.

Have you got Visual Studio installed? Right-click your uproject file, click “generate visual studio project files”. Then open the PSM.sln file, and try compile it in Visual Studio. That will either work or you’ll get a more meaningful error in the output log there.