phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4e4196711d54d1513e284749504457d4' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4e4196711d54d1513e284749504457d4', -1, 1498701771, 1498701771, '36c46bf4', 1, 0, 0)

Line : 187
File : sessions.php