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 ('65325f9746a4955823c645cc4f2631fe', -1, 1508488507, 1508488507, '36e0c5fb', -4, 0, 0)

Line : 187
File : sessions.php