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 ('bc0167c3394c1905b70b59858b5aeb2c', -1, 1524532405, 1524532405, '6b1630f3', -4, 0, 0)

Line : 189
File : sessions.php