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 ('d7846657733255a0a3b5c6a0c01d7cd9', -1, 1513177689, 1513177689, '36a33d42', 45, 0, 0)

Line : 187
File : sessions.php