phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a71299589722f1705e9e885804a39f27' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('a71299589722f1705e9e885804a39f27', -1, 1766504872, 1766504872, 'd849d820', -9, 0, 0)

Line : 187
File : sessions.php