MariaDB won't start when making change to my.cnf

I make optimizatin based from mysqltunner but when apply conf to my.cnf, mariadb can not starting sir. Maybe you can help optimizing mariadb (v-103) on my server (64GB ram, 20core/40th, nvme. I try this [CODE=html]## ## Files back_log = 300 open-files-limit = 8192 open-files = 1024 port = 3306 socket = /var/lib/mysql/mysql.sock pid-file = /var/lib/mysql/mysql.pid skip-external-locking skip-name-resolve ## Logging relay_log = mysql-relay-bin relay_log_index = mysql-relay-index log_error = mysql-error.err log_warnings log_bin = mysql-bin log_slow_queries = mysql-slow.log long_query_time = 10 #default: 10 max_binlog_size = 256M #max size for binlog before rolling expire_logs_days = 4 #binlog files older than this will be purged ## Per-Thread Buffers * (max_connections) = total per-thread mem usage thread_stack = 512K #default: 32bit: 192K, 64bit: 256K sort_buffer_size = 2M #default: 2M, larger may cause perf issues read_buffer_size = 2M #default: 128K, change in increments of 4K read_rnd_buffer_size = 2M #default: 256K join_buffer_size = 2M #default: 128K binlog_cache_size = 128K #default: 32K, size of buffer to hold TX queries ## total per-thread buffer memory usage: 17664000K = 17.250GB ## Query Cache query_cache_size = 64M #global buffer query_cache_limit = 512K #max query result size to put in cache ## Connections max_connections = 4000 #multiplier for memory usage via per-thread buffers max_connect_errors = 100 #default: 10 concurrent_insert = 2 #default: 1, 2: enable insert for all instances connect_timeout = 30 #default -5.1.22: 5, +5.1.22: 10 max_allowed_packet = 32M #max size of incoming data to allow ## Default Table Settings sql_mode = NO_AUTO_CREATE_USER ## Table and TMP settings max_heap_table_size = 1G #recommend same size as tmp_table_size bulk_insert_buffer_size = 1G #recommend same size as tmp_table_size tmp_table_size = 1G #recommend 1G min #tmpdir = /data/mysql-tmp0:/data/mysql-tmp1 #Recommend using RAMDISK for tmpdir ## Thread settings thread_concurrency = 16 #recommend 2x CPU cores thread_cache_size = 100 #recommend 5% of max_connections ## MyISAM Engine key_buffer = 1M #global buffer myisam_sort_buffer_size = 128M #index buffer size for creating/altering indexes myisam_max_sort_file_size = 256M #max file size for tmp table when creating/alering indexes myisam_repair_threads = 4 #thread quantity when running repairs myisam_recover = BACKUP #repair mode, recommend BACKUP ## InnoDB Plugin Independent Settings innodb_log_file_size = 768M innodb_log_files_in_group = 4 innodb_buffer_pool_size = 19G #global buffer innodb_additional_mem_pool_size = 4M #global buffer innodb_flush_log_at_trx_commit = 2 #2/0 = perf, 1 = ACID innodb_table_locks = 0 #preserve table locks innodb_log_buffer_size = 128M #global buffer innodb_lock_wait_timeout = 60 innodb_thread_concurrency = 16 #recommend 2x core quantity innodb_commit_concurrency = 16 #recommend 4x num disks innodb_flush_method = O_DIRECT #O_DIRECT = local/DAS, O_DSYNC = SAN/iSCSI innodb_support_xa = 0 #recommend 0, disable xa to negate extra disk flush skip-innodb-doublewrite
Event only add innodb_buffer_pool_size = 19G still can't start.