Shared memory object not found

My NSight System was running fine, but suddenly it starts to throw error.

/build/agent/work/20a3cfcd1c25021d/QuadD/Common/SessionManager/Details/SharedMemoryStringTable.cpp(31): Throw in function QuadDCommon::SessionManager::Details::SharedMemoryStringTable::SharedMemoryStringTable(QuadDCommon::SessionManager::Details::ManagedSharedMemory&, const char*)
Dynamic exception type: boost::wrapexcept<std::runtime_error>
std::exception::what: Shared memory object not found

How to resolve this issue?