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 ('ec78e7027d45f81a0be8b4a14a8edf51', -1, 1513134698, 1513134698, '36e37e45', 17, 0, 0)

Line : 211
File : sessions.php