Save game loads correctly without issue, not sure it will be of any help.
Factorio crashed. Generating symbolized stacktrace, please wait ...
44670.436 Warning Logger.cpp:446: Symbols.size() == 21, usedSize == 17
#0 0x0000000000b07b4d in Logger::logStacktrace(StackTraceInfo*) at /tmp/factorio-R53K2q/src/Util/Logger.cpp:471
#1 0x0000000000683c21 in CrashHandler::writeStackTrace(CrashHandler::CrashReason) at /tmp/factorio-R53K2q/src/Util/CrashHandler.cpp:127
#2 0x0000000000683dca in CrashHandler::SignalHandler(int) at /tmp/factorio-R53K2q/src/Util/CrashHandler.cpp:421
#3 0x0000000000035950 in ?? at ??:0
#4 0x00000000008fd0ef in GameActionHandler::setFilter(InputAction const&, Controller*) at /tmp/factorio-R53K2q/src/GameActionHandler.cpp:2355
#5 0x0000000000958364 in GameActionHandler::actionPerformed(InputAction const&) at /tmp/factorio-R53K2q/src/GameActionHandler.cpp:262 (discriminator 4)
#6 0x00000000005ce75c in InputHandler::flushToListeners(InputAction const&, bool) at /tmp/factorio-R53K2q/src/Input/InputHandler.cpp:62
#7 0x00000000009e6080 in InputHandler::flushActions(bool) at /tmp/factorio-R53K2q/src/Input/InputHandler.cpp:55
#8 0x00000000009e4fee in NetworkInputHandler::flushActions(bool) at /tmp/factorio-R53K2q/src/Net/NetworkInputHandler.cpp:157
#9 0x000000000089a9a0 in InputHandler::nextTick() at /tmp/factorio-R53K2q/src/Input/InputHandler.cpp:45
#10 0x0000000000c22bf1 in NetworkInputHandler::nextTick() at /tmp/factorio-R53K2q/src/Net/NetworkInputHandler.cpp:117
#11 0x0000000000c2376f in NetworkInputHandler::tryToApplyNextTickClosure() at /tmp/factorio-R53K2q/src/Net/NetworkInputHandler.cpp:110
#12 0x0000000000c27dc3 in ServerMultiplayerManager::updateMultiplayerInputInternal() at /tmp/factorio-R53K2q/src/Net/ServerMultiplayerManager.cpp:647
#13 0x0000000000c287c3 in MultiplayerManagerBase::updateMultiplayerInput() at /tmp/factorio-R53K2q/src/Net/MultiplayerManagerBase.cpp:180
#14 0x000000000041f5e9 in MainLoop::gameUpdateStep(MultiplayerManagerBase, Scenario, AppManager*, MainLoop::HeavyMode) at /tmp/factorio-R53K2q/src/MainLoop.cpp:967
#15 (nil) in MainLoop::gameUpdateLoop(MainLoop::HeavyMode) at /tmp/factorio-R53K2q/src/MainLoop.cpp:852
#16 0x000000000042585f in MainLoop::mainLoopStepHeadless(MainLoop::HeavyMode) at /tmp/factorio-R53K2q/src/MainLoop.cpp:467
44674.433 Warning Logger.cpp:446: Symbols.size() == 20, usedSize == 16
44674.433 Error CrashHandler.cpp:128: Map tick at moment of crash: 4726457
44674.433 Error Util.cpp:67: Unexpected error occurred. If you're running the latest version of the game you can help us solve the problem by posting the contents of the log file on the Factorio forums.
Please also include the save file(s), any mods you may be using, and any steps you know of to reproduce the crash.