MySQL crashed suddenly

MySQL seems to crash suddenly but recovered in around 2minutes. I am running on Ubuntu 18.04 (16vcpu, 32GB RAM). I dont know what caused it.

Here is my.ini

[mysql] default-character-set=utf8mb4  [mysqld] lower_case_table_names = 1 pid-file        = /var/run/mysqld/mysqld.pid socket          = /var/run/mysqld/mysqld.sock datadir         = /data/mysql log-error       = /var/log/mysql/error.log # By default we only accept connections from localhost #bind-address   = 127.0.0.1 # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 max_allowed_packet=1G max_connect_errors=1000 max_connections=2500 character-set-server=utf8mb4 collation-server=utf8mb4_unicode_ci innodb_buffer_pool_size=27G server-id=2 log-bin=env1 expire_logs_days=2 sql_mode='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' net_read_timeout=300 net_write_timeout=300 log_bin_trust_function_creators=1 

Here is my /var/log/mysql/error.log enter image description here

The crash is around 8:11am as seen on the image above

Im trying to find the root cause for this. Is there any logs in Ubuntu that I can check to find more info on what caused MySQL to crash?