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 ('fa7ee14de6ba0653c8b86dd4339b1c76', -1, 1542489558, 1542489558, '365ab978', 9, 0, 0)

Line : 186
File : sessions.php