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 ('e2a787bfec1193d9b3bfa7a03f7a6108', -1, 1508614369, 1508614369, '36c421f6', 9, 0, 0)

Line : 187
File : sessions.php