phpBB : Critical Error

Error creating new sessions

DEBUG MODE

SQL Error : 1062 Duplicate entry '93d6bba2f315af0dab34a381013cbead' 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 ('93d6bba2f315af0dab34a381013cbead', -1, 1511560943, 1511560943, '36a28b69', -9, 0, 0)

Line : 187
File : sessions.php