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 ('6fd4cde359f99d61ec105c90a5009385', -1, 1462573645, 1462573645, '36e216c0', -1, 0, 0)

Line : 187
File : sessions.php