Lost configuration

After upgrading HA it seems that I lost all of te configured items. The GUI just gives me Chrome Cast, Sonos and te weather. In the log I can see messages about Zwave (3 nodes), Hue, DSMR and so on.
The URL I visit is https:///lovelace/default_view
A bit of the log:
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2019-09-09 15:51:34 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event state_changed[L]: entity_id=sensor.aeon_labs_dsb05_multisensor_temperature, old_state=<state sensor.aeon_labs_dsb05_multisensor_temperature=22.9; node_id=9, value_index=1, value_instance=1, value_id=72057594193920018, unit_of_measurement=°C, friendly_name=ZW-BK-SEN-TEMP @ 2019-09-09T15:49:34.247555+02:00>, new_state=<state sensor.aeon_labs_dsb05_multisensor_temperature=22.9; node_id=9, value_index=1, value_instance=1, value_id=72057594193920018, unit_of_measurement=°C, friendly_name=ZW-BK-SEN-TEMP @ 2019-09-09T15:51:34.258788+02:00>>
2019-09-09 15:51:34 WARNING (SyncWorker_0) [homeassistant.components.sonos.media_player] Could not connect media_player.keuken: Connection error: HTTPConnectionPool(host=‘10.254.252.100’, port=1400): Max retries exceeded with url: /MediaRenderer/AVTransport/Control (Caused by ConnectTimeoutError(<urllib3.connection.HTTPConnection object at 0x7fadb0a7e450>, ‘Connection to 10.254.252.100 timed out. (connect timeout=20)’))
2019-09-09 15:51:35 DEBUG (MainThread) [homeassistant.components.hue.light] Finished light request in 0.026 seconds
2019-09-09 15:51:35 DEBUG (MainThread) [homeassistant.components.hue.light] Finished group request in 0.038 seconds
2019-09-09 15:51:38 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event state_changed[L]: entity_id=sensor.power_consumption, old_state=<state sensor.power_consumption=0.006; unit_of_measurement=kW, friendly_name=Power Consumption, icon=mdi:flash @ 2019-09-09T15:51:08.511306+02:00>, new_state=<state sensor.power_consumption=0.085; unit_of_measurement=kW, friendly_name=Power Consumption, icon=mdi:flash @ 2019-09-09T15:51:38.763439+02:00>>
2019-09-09 15:51:38 DEBUG (MainThread) [homeassistant.core] Bus:Handling <Event state_changed[L]: entity_id=sensor.power_consumption_phase_l1, old_state=<state sensor.power_consumption_phase_l1=0.006; unit_of_measurement=kW, friendly_name=Power Consumption Phase L1, icon=mdi:flash @ 2019-09-09T15:51:28.678035+02:00>, new_state=<state sensor.power_consumption_phase_l1=0.085; unit_of_measurement=kW, friendly_name=Power Consumption Phase L1, icon=mdi:flash @ 2019-09-09T15:51:38.765760+02:00>>
2019-09-09 15:51:39 DEBUG (MainThread) [homeassistant.components.hue.sensor_base] Finished sensor request in 0.016 seconds
‘’’’

What goes wrong here?

regards
Poul

First; from which to which version did you upgrade? Did you read the breaking changes? What’s at the beginning of the log? Any custom components? And last but not least, did you read this?