phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5e7087d20772ce00a7504c163d048f85' for key 1

INSERT INTO z_phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('5e7087d20772ce00a7504c163d048f85', -1, 1412172854, 1412172854, '1714dc4f', 23, 0, 0)

Line : 187
File : sessions.php