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 ('d81e7f363a846bddc919b6d4524aacb8', -1, 1566254962, 1566254962, '03511c5e', 55, 0, 0)

Line : 187
File : sessions.php