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 ('373d3496f89e0180f40b75fde66c2a01', -1, 1508627695, 1508627695, '171456b1', 15, 0, 0)

Line : 211
File : sessions.php