ZWave network is intermittently unresponsive

I am using Home Assistant on a Raspberry Pi. Recently my ZWave network will stop responding to commands. I first notice it when my Alexa cannot activate my devices. She says “Ok” but nothing happens. I can toggle my Lifx lightbulbs through HA or my WiFi switches through HA. If I try to toggle the ZWave devices through the app the toggle changes but then toggles back.

This morning I tried to toggle a light switch through Alexa and the device did not turn on. I checked the OZW log and I see the following…

2018-10-19 04:28:36.905 Info, Node008, Value::Set - COMMAND_CLASS_SWITCH_BINARY - Switch - 0 - 1 - True
2018-10-19 04:28:36.905 Info, Node008, SwitchBinary::Set - Setting node 8 to On
2018-10-19 04:28:36.906 Detail, Node008, Queuing (Send) SwitchBinaryCmd_Set (Node=8): 0x01, 0x0a, 0x00, 0x13, 0x08, 0x03, 0x25, 0x01, 0xff, 0x25, 0x2c, 0x3f
2018-10-19 04:28:36.907 Detail, Node008, Queuing (Send) SwitchBinaryCmd_Get (Node=8): 0x01, 0x09, 0x00, 0x13, 0x08, 0x02, 0x25, 0x02, 0x25, 0x2d, 0xc0

This morning I tried to unlock my front door through the HA website and the door was already unlocked but HA showed it as locked. When I tried to unlock I see this in the logs…

2018-10-19 12:10:56.309 Info, Node037, Value::Set - COMMAND_CLASS_DOOR_LOCK - Locked - 0 - 1 - False
2018-10-19 12:10:56.309 Info, Node037, Value_Lock::Set - Requesting lock to be Unlocked
2018-10-19 12:10:56.309 Detail, Node037, Setting Encryption Flag on Message For Command Class COMMAND_CLASS_DOOR_LOCK
2018-10-19 12:10:56.309 Detail, Node037, Queuing (Send) DoorLockCmd_Set (Node=37): 0x01, 0x0a, 0x00, 0x13, 0x25, 0x03, 0x62, 0x01, 0x00, 0x25, 0x7c, 0xfa
2018-10-19 12:10:56.309 Detail, Node037, Setting Encryption Flag on Message For Command Class COMMAND_CLASS_DOOR_LOCK
2018-10-19 12:10:56.310 Detail, Node037, Queuing (Send) DoorLockCmd_Get (Node=37): 0x01, 0x09, 0x00, 0x13, 0x25, 0x02, 0x62, 0x02, 0x25, 0x7d, 0xfa

I do not have any polling set up. All of my switches are Inovelli ZWave+.