phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1114 The table 'phpbb_sessions' is full

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a9d2ae0e38a223e990e5919c6289b24d', -1, 1397975692, 1397975692, '36cd3b4e', 52, 0, 0)

Line : 187
File : sessions.php