Перестал работать mysql. В чем причина?

190626 14:34:56 [Note] c:\openserver\modules\database\MySQL-5.5\bin\mysqld.exe (mysqld 5.5.45-log) starting as process 6364 ...
190626 14:34:56 [Note] Plugin 'FEDERATED' is disabled.
c:\openserver\modules\database\MySQL-5.5\bin\mysqld.exe: Table 'mysql.plugin' doesn't exist
190626 14:34:56 [ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
190626 14:34:56 InnoDB: The InnoDB memory heap is disabled
190626 14:34:56 InnoDB: Mutexes and rw_locks use Windows interlocked functions
190626 14:34:56 InnoDB: Compressed tables use zlib 1.2.3
190626 14:34:56 InnoDB: Initializing buffer pool, size = 20.0M
190626 14:34:56 InnoDB: Completed initialization of buffer pool
190626 14:34:56 InnoDB: highest supported file format is Barracuda.
InnoDB: Log scan progressed past the checkpoint lsn 463248949
190626 14:34:56  InnoDB: Database was not shut down normally!
InnoDB: Starting crash recovery.
InnoDB: Reading tablespace information from the .ibd files...
InnoDB: Restoring possible half-written data pages from the doublewrite
InnoDB: buffer...
InnoDB: Doing recovery: scanned up to log sequence number 463250320
190626 14:34:57  InnoDB: Starting an apply batch of log records to the database...
InnoDB: Progress in percents: 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 
InnoDB: Apply batch completed
190626 14:34:58  InnoDB: Waiting for the background threads to start
190626 14:34:59 InnoDB: 5.5.45 started; log sequence number 463250320
190626 14:34:59 [Note] Server hostname (bind-address): '192.168.18.158'; port: 3306
190626 14:34:59 [Note]   - '192.168.18.158' resolves to '192.168.18.158';
190626 14:34:59 [Note] Server socket created on IP: '192.168.18.158'.
190626 14:34:59 [ERROR] Fatal error: Can't open and lock privilege tables: Table 'mysql.host' doesn't exist