phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '46a452dd5132e74cedfb914ffdeb0a36' for key 1

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('46a452dd5132e74cedfb914ffdeb0a36', -1, 1498200492, 1498200492, '36a25e0f', 23, 0, 0)

Line : 187
File : sessions.php