[AVRO ROUTER] Maxscale Crash

Jul 22 14:53:11 monitoring systemd[1]: maxscale.service watchdog timeout (limit 1min)!
Jul 22 14:53:11 monitoring maxscale[35969]: Fatal: MaxScale 2.3.7 received fatal signal 6. Attempting backtrace.
Jul 22 14:53:11 monitoring maxscale[35969]: Commit ID: b80aa081febccaa370d7ed898cf97b4f07fa9df9 System name: Linux Release string: CentOS Linux release 7.6.1810 (Core)
Jul 22 14:53:11 monitoring maxscale[35969]: /usr/bin/maxscale(_ZN7maxbase15dump_stacktraceESt8functionIFvPKcS2_EE+0x2b) [0x40cbab]: /home/vagrant/MaxScale/maxutils/maxbase/src/stacktrace.cc:130
Jul 22 14:53:11 monitoring maxscale[35969]: /usr/bin/maxscale(_ZN7maxbase15dump_stacktraceEPFvPKcS1_E+0x4e) [0x40cf0e]: /usr/include/c++/4.8.2/functional:2029
Jul 22 14:53:11 monitoring maxscale[35969]: /usr/bin/maxscale() [0x4095b9]: ??:0
Jul 22 14:53:11 monitoring maxscale[35969]: /lib64/libpthread.so.0(+0xf5d0) [0x7f63270835d0]: sigaction.c:?
Jul 22 14:53:11 monitoring maxscale[35969]: /lib64/libpthread.so.0(+0xdadb) [0x7f6327081adb]: sem_wait.c:?
Jul 22 14:53:11 monitoring maxscale[35969]: /lib64/libpthread.so.0(+0xdb6f) [0x7f6327081b6f]: sem_wait.c:?
Jul 22 14:53:11 monitoring maxscale[35969]: /lib64/libpthread.so.0(sem_wait+0x2b) [0x7f6327081c0b]: ??:0
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN8maxscale13RoutingWorker16execute_seriallyERN7maxbase10WorkerTaskE+0x92) [0x7f63277ea522]: /home/vagrant/MaxScale/maxutils/maxbase/include/maxbase/semaphore.hh:113
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(dcb_foreach+0x38) [0x7f63277aebb8]: /home/vagrant/MaxScale/server/core/dcb.cc:2983
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libavro-common.so.1.0.0(_Z13do_checkpointP4Avro+0x25) [0x7f6318b11ea5]: /home/vagrant/MaxScale/server/modules/routing/avrorouter/avro_file.cc:397
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libavro-common.so.1.0.0(avro_read_all_events+0x170) [0x7f6318b12360]: /home/vagrant/MaxScale/server/modules/routing/avrorouter/avro_file.cc:618
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libavrorouter.so(_Z14converter_funcN7maxbase6Worker4Call8action_tEP4Avro+0x78) [0x7f6318d6df68]: /home/vagrant/MaxScale/server/modules/routing/avrorouter/avro_main.cc:279
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker4tickEv+0xe6) [0x7f632780ceb6]: /home/vagrant/MaxScale/maxutils/maxbase/include/maxbase/worker.hh:777
Jul 22 14:53:12 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase11WorkerTimer6handleEPNS_6WorkerEj+0x36) [0x7f632780b656]: /home/vagrant/MaxScale/maxutils/maxbase/src/worker.cc:256
Jul 22 14:53:13 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker15poll_waiteventsEv+0x1b5) [0x7f632780c055]: /home/vagrant/MaxScale/maxutils/maxbase/src/worker.cc:844
Jul 22 14:53:13 monitoring maxscale[35969]: /usr/lib64/maxscale/libmaxscale-common.so.1.0.0(_ZN7maxbase6Worker3runEPNS_9SemaphoreE+0x51) [0x7f632780c251]: /home/vagrant/MaxScale/maxutils/maxbase/src/worker.cc:545