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 ('2eaf5d1eb201765f0c549c0d11b5743b', -1, 1534401354, 1534401354, '365caee2', 20, 0, 0)

Line : 187
File : sessions.php