phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a84c91501771f4b688799420e39230f7' 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 ('a84c91501771f4b688799420e39230f7', -1, 1715783845, 1715783845, '1275a9f1', -8, 0, 0)

Line : 187
File : sessions.php