phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b36414d3b3adfa42b0188aaca1285fef' 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 ('b36414d3b3adfa42b0188aaca1285fef', -1, 1490328778, 1490328778, '36cd4149', -1, 0, 0)

Line : 187
File : sessions.php