Hey -
Reading over the log it appears that the crash happened during a hot reload, specifically referencing the CMP_Jewel class. If this class does exist make sure it is in the /Script/Puzzler3 folder (which is where VS is looking for it). If it is not part of your project then you may want to try refreshing the references by right clicking on the .uproject file and select Generate Project Files.
Additionally you mentioned that a missing dll in the title. You can try deleting the dlls from the Engine/Binaries/Win64 folder of the engine install location (if there is a specific dll you can delete just the one). After that you will need to rebuild the engine to regenerate the dlls.
Cheers