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 ('36c308f7cfd9008a52e619056e3f37cd', -1, 1508463501, 1508463501, '36a7fa40', 3, 0, 0)

Line : 186
File : sessions.php