what is mean of error LNK unresolved external symbol?
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anyone can help me to undrestand this linker error?
how i can found exact place of error from reading this linker error?

    error LNK2019: unresolved external symbol "__declspec(dllimport) const Serialization::Serialization::IBufferWriter::`vftable'" (__imp_??_7IBufferWriter@Serialization@1@6B@) referenced in function "public: __thiscall Serialization::Serialization::IBufferWriter::IBufferWriter(class Utils::IBuffer &)" (??0IBufferWriter@Serialization@1@QAE@AAVIBuffer@Utils@@@Z)

