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 ('fdd975c45a87459613097ab85ed1bb27', -1, 1513177774, 1513177774, '36a33d42', 60, 0, 0)

Line : 187
File : sessions.php