plantage après le sommeil

Ces dernières semaines, j'ai eu plusieurs plantages par jour après que le Mac se soit mis en veille.

voici le journal

zeltak@imbp-50:~|  log show --predicate 'eventMessage contains "Previous shutdown cause"' --last 24h

Filtering the log data using "composedMessage CONTAINS "Previous shutdown cause""
Skipping info and debug messages, pass --info and/or --debug to include.
Timestamp                       Thread     Type        Activity             PID    TTL
2019-12-19 16:35:42.924903-0500 0xbc       Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: -20
2019-12-19 19:26:36.824995-0500 0x1919     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 20:20:46.794533-0500 0x1c80     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 20:26:11.649020-0500 0x1ebf     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 21:20:20.630227-0500 0x20b2     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 22:14:27.574007-0500 0x22a7     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 22:19:51.495891-0500 0x22a7     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-19 23:14:00.490561-0500 0x22a7     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 00:08:06.470641-0500 0x282e     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 01:02:15.395498-0500 0x282e     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 01:56:25.387258-0500 0x2c8f     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 02:50:35.362751-0500 0x2e80     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 03:44:46.298714-0500 0x334b     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 04:37:41.253859-0500 0x34e5     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
2019-12-20 07:00:04.159349-0500 0x3502     Default     0x0                  0      0    kernel: (AppleSMC) Previous shutdown cause: 5
--------------------------------------------------------------------------------------------------------------------
Log      - Default:         15, Info:                0, Debug:             0, Error:          0, Fault:          0
Activity - Create:           0, Transition:          0, Actions:           0
ze

J'utilise un MBP 2018, avec la dernière version de Catalina 10.15.3.

étant nouveau sur le Mac, quelqu'un peut-il m'aider à déchiffrer le journal ?