phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'da24d5ab232df8fdc256eb5de64cfb36' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('da24d5ab232df8fdc256eb5de64cfb36', -1, 1493402904, 1493402904, '17141874', -1000, 0, 0)

Line : 187
File : sessions.php