Error in MYSQL (Timeout expired)

[PHB]

Hi, lately I'm having problems with mysql, I use vesta to host files and database from a Habbo server, and I'm having the following error: This may have occurred because all pooled connections were in use and max pool size was reached.
My mysql configuration is below.

Code: Select all

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0

skip-external-locking
key_buffer_size = 512M
max_allowed_packet = 64M
table_open_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 128M
thread_cache_size = 8
query_cache_size= 32M
thread_concurrency = 8

#innodb_use_native_aio = 0
innodb_file_per_table
innodb_buffer_pool_size = 2048M

max_connections=819
max_user_connections=9999
wait_timeout=10
interactive_timeout=50
long_query_time=5

#slow_query_log=1
#slow_query_log_file=/var/log/mysql-slow-queries.log


[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

#
# include all files from the config directory
#
!includedir /etc/my.cnf.d

Does anyone know what may be causing the error?