That seemed to help, thanks! No, no crash from the command line … but ;).
I was running from the command line as sudo (so root), tried to restart the service, and it fails => thinking this is a permissions issue, because I ran command line as root, and now I see in the log (when trying to start the service),
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"E", "c":"WT", "id":22435, "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":13,"message":"[1756831934:510430][3381989:0x7e358d57b240], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 924: /var/lib/mongodb/WiredTiger.turtle: handle-open: open: Permission denied"}}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"E", "c":"WT", "id":22435, "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":13,"message":"[1756831934:510714][3381989:0x7e358d57b240], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 924: /var/lib/mongodb/WiredTiger.turtle: handle-open: open: Permission denied"}}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"E", "c":"WT", "id":22435, "ctx":"initandlisten","msg":"WiredTiger error message","attr":{"error":13,"message":"[1756831934:510930][3381989:0x7e358d57b240], wiredtiger_open: [WT_VERB_DEFAULT][ERROR]: __posix_open_file, 924: /var/lib/mongodb/WiredTiger.turtle: handle-open: open: Permission denied"}}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"W", "c":"STORAGE", "id":22347, "ctx":"initandlisten","msg":"Failed to start up WiredTiger under any compatibility version. This may be due to an unsupported upgrade or downgrade."}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"F", "c":"STORAGE", "id":28595, "ctx":"initandlisten","msg":"Terminating.","attr":{"reason":"13: Permission denied"}}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"F", "c":"ASSERT", "id":23091, "ctx":"initandlisten","msg":"Fatal assertion","attr":{"msgid":28595,"file":"src/mongo/db/storage/wiredtiger/wiredtiger_kv_engine.cpp","line":754}}
{"t":{"$date":"2025-09-02T11:52:14.510-05:00"},"s":"F", "c":"ASSERT", "id":23092, "ctx":"initandlisten","msg":"\n\n***aborting after fassert() failure\n\n"}
Any thoughts how to correct this? Thanks again!