Hello,

There was an unexpectedly reboot on the server. And I don't have backups. and I tried to use "-repair" command but I got the same error that mentioned below, I also attached my wiredTiger files.

Windows server 2016

mongo version: v4.0.2

2022-01-17T13:55:32.432+0200 I CONTROL [main] Trying to start Windows service 'MongoDB'
2022-01-17T13:55:32.474+0200 I CONTROL [initandlisten] MongoDB starting : pid=11400 port=27017 dbpath=C:\data\db\ 64-bit host=CAI1-SV00075
2022-01-17T13:55:32.483+0200 I CONTROL [initandlisten] targetMinOS: Windows 7/Windows Server 2008 R2
2022-01-17T13:55:32.484+0200 I CONTROL [initandlisten] db version v4.0.2
2022-01-17T13:55:32.496+0200 I CONTROL [initandlisten] git version: fc1573ba18aee42f97a3bb13b67af7d837826b47
2022-01-17T13:55:32.505+0200 I CONTROL [initandlisten] allocator: tcmalloc
2022-01-17T13:55:32.518+0200 I CONTROL [initandlisten] modules: none
2022-01-17T13:55:32.519+0200 I CONTROL [initandlisten] build environment:
2022-01-17T13:55:32.522+0200 I CONTROL [initandlisten] distmod: 2008plus-ssl
2022-01-17T13:55:32.529+0200 I CONTROL [initandlisten] distarch: x86_64
2022-01-17T13:55:32.533+0200 I CONTROL [initandlisten] target_arch: x86_64
2022-01-17T13:55:32.534+0200 I CONTROL [initandlisten] options: { service: true, systemLog:

{ destination: "file", path: "C:\Program Files\MongoDB\Server\4.0\loginstall.txt" }

}
2022-01-17T13:55:32.586+0200 I STORAGE [initandlisten] Detected data files in C:\data\db\ created by the 'wiredTiger' storage engine, so setting the active storage engine to 'wiredTiger'.
2022-01-17T13:55:32.599+0200 I STORAGE [initandlisten] wiredtiger_open config: create,cache_size=3582M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=(recovery_progress),
2022-01-17T13:55:32.838+0200 E STORAGE [initandlisten] WiredTiger error (-31803) [1642420532:837859][11400:140721342077392], file:WiredTiger.wt, connection: __wt_turtle_read, 336: WiredTiger.turtle: fatal turtle file read error: WT_NOTFOUND: item not found Raw: [1642420532:837859][11400:140721342077392], file:WiredTiger.wt, connection: __wt_turtle_read, 336: WiredTiger.turtle: fatal turtle file read error: WT_NOTFOUND: item not found
2022-01-17T13:55:32.839+0200 E STORAGE [initandlisten] WiredTiger error (-31804) [1642420532:838416][11400:140721342077392], file:WiredTiger.wt, connection: __wt_panic, 523: the process must exit and restart: WT_PANIC: WiredTiger library panic Raw: [1642420532:838416][11400:140721342077392], file:WiredTiger.wt, connection: __wt_panic, 523: the process must exit and restart: WT_PANIC: WiredTiger library panic
2022-01-17T13:55:32.848+0200 F - [initandlisten] Fatal Assertion 50853 at src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp 401
2022-01-17T13:55:32.863+0200 F - [initandlisten]

***aborting after fassert() failure

2022-01-17T13:56:06.575+0200 F - [initandlisten] Got signal: 22 (SIGABRT).
mongod.exe ...\src\mongo\util\stacktrace_windows.cpp(244) mongo::printStackTrace+0x67x
mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(182) mongo::`anonymous namespace'::printSignalAndBacktrace+0x116x
mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(238) mongo::`anonymous namespace'::abruptQuit+0x133x
ucrtbase.dll raise+0x487x
ucrtbase.dll abort+0x49x
mongod.exe ...\src\mongo\util\assert_util.cpp(145) mongo::fassertFailedWithLocation+0x385x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp(401) mongo::`anonymous namespace'::mdb_handle_error_with_startup_suppression+0x503x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(277) __eventv+0x897x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(331) __wt_err_func+0x42x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(538) __wt_panic+0x69x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_turtle.c(335) __wt_turtle_read+0x766x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(304) __wt_metadata_search+0x207x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(48) __conn_dhandle_config_set+0x34x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(443) __wt_conn_dhandle_open+0x117x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(546) __wt_session_get_dhandle+0x278x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(538) __wt_session_get_dhandle+0x475x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(351) __wt_session_get_btree_ckpt+0x196x
mongod.exe ...\src\third_party\wiredtiger\src\cursor\cur_file.c(801) __wt_curfile_open+0x462x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(516) __session_open_cursor_int+0x697x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(591) __wt_open_cursor+0x96x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(115) __wt_metadata_cursor+0x153x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_api.c(2737) wiredtiger_open+0x3462x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(168) mongo::`anonymous namespace'::openWiredTiger+0x130x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(545) mongo::WiredTigerKVEngine::WiredTigerKVEngine+0x2423x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_init.cpp(106) mongo::`anonymous namespace'::WiredTigerFactory::create+0x649x
mongod.exe ...\src\mongo\db\storage\storage_engine_init.cpp(164) mongo::initializeStorageEngine+0x2485x
mongod.exe ...\src\mongo\db\db.cpp(344) mongo::`anonymous namespace'::_initAndListen+0x1788x
mongod.exe ...\src\mongo\db\db.cpp(683) mongo::`anonymous namespace'::initAndListen+0x39x
mongod.exe ...\src\mongo\util\ntservice.cpp(560) mongo::ntservice::initService+0x83x
sechost.dll LsaLookupFreeMemory+0x434x
KERNEL32.DLL BaseThreadInitThunk+0x20x
2022-01-17T13:56:06.599+0200 F CONTROL [initandlisten] *** unhandled exception 0x0000000E at 0x00007FFC3D7B4F38, terminating
2022-01-17T13:56:06.600+0200 F CONTROL [initandlisten] *** stack trace for unhandled exception:
2022-01-17T13:56:06.917+0200 I - [initandlisten] KERNELBASE.dll RaiseException+0x104x
mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(239) mongo::`anonymous namespace'::abruptQuit+0x157x
ucrtbase.dll raise+0x487x
ucrtbase.dll abort+0x49x
mongod.exe ...\src\mongo\util\assert_util.cpp(145) mongo::fassertFailedWithLocation+0x385x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp(401) mongo::`anonymous namespace'::mdb_handle_error_with_startup_suppression+0x503x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(277) __eventv+0x897x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(331) __wt_err_func+0x42x
mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(538) __wt_panic+0x69x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_turtle.c(335) __wt_turtle_read+0x766x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(304) __wt_metadata_search+0x207x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(48) __conn_dhandle_config_set+0x34x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(443) __wt_conn_dhandle_open+0x117x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(546) __wt_session_get_dhandle+0x278x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(538) __wt_session_get_dhandle+0x475x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(351) __wt_session_get_btree_ckpt+0x196x
mongod.exe ...\src\third_party\wiredtiger\src\cursor\cur_file.c(801) __wt_curfile_open+0x462x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(516) __session_open_cursor_int+0x697x
mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(591) __wt_open_cursor+0x96x
mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(115) __wt_metadata_cursor+0x153x
mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_api.c(2737) wiredtiger_open+0x3462x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(168) mongo::`anonymous namespace'::openWiredTiger+0x130x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(545) mongo::WiredTigerKVEngine::WiredTigerKVEngine+0x2423x
mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_init.cpp(106) mongo::`anonymous namespace'::WiredTigerFactory::create+0x649x
mongod.exe ...\src\mongo\db\storage\storage_engine_init.cpp(164) mongo::initializeStorageEngine+0x2485x
mongod.exe ...\src\mongo\db\db.cpp(344) mongo::`anonymous namespace'::_initAndListen+0x1788x
mongod.exe ...\src\mongo\db\db.cpp(683) mongo::`anonymous namespace'::initAndListen+0x39x
mongod.exe ...\src\mongo\util\ntservice.cpp(560) mongo::ntservice::initService+0x83x
sechost.dll LsaLookupFreeMemory+0x434x
KERNEL32.DLL BaseThreadInitThunk+0x20x
2022-01-17T13:56:06.926+0200 I CONTROL [initandlisten] writing minidump diagnostic file C:\Program Files\MongoDB\Server\4.2022-01-17T11-56-06.mdmp
2022-01-17T13:56:15.015+0200 F CONTROL [initandlisten] *** immediate exit due to unhandled exception