[10:27:50.844] Error: WorldServerThread exception caught: (JsonException) Cannot convert from null to string
./starbound_server(_ZN4Star13StarExceptionC2ESs+0x75) [0xf9bc55]
./starbound_server(_ZN4Star13JsonExceptionC1ESs+0x23) [0xf1af23]
./starbound_server(_ZNK4Star4Json8toStringEv+0x68) [0xf12ef8]
./starbound_server(_ZN4Star14FarmableObject10enterStageEi+0x70b) [0xdf0c5b]
./starbound_server(_ZN4Star14FarmableObject10tickMasterEv+0x71) [0xdf15c1]
./starbound_server() [0x889444]
./starbound_server(_ZNK4Star9EntityMap14forAllEntitiesESt8functionIFvRKSt10shared_ptrINS_6EntityEEEE+0x2c) [0xa56f6c]
./starbound_server(_ZN4Star11WorldServer6updateEv+0x33c) [0x8a076c]
./starbound_server(_ZN4Star17WorldServerThread6updateEv+0x722) [0x8d3982]
./starbound_server(_ZN4Star17WorldServerThread3runEv+0x2c8) [0x8d4b48]
./starbound_server(_ZN4Star10ThreadImpl9runThreadEPv+0x1a) [0xfa4aba]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x8182) [0x7f33489cc182]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7f33481ef00d]
[10:27:51.267] Info: UniverseServer: World thread has stopped, removing world CelestialWorld:274:183:-149663648:5