phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a7b21ef4205fe1fc1f37da9b2f2a6a73' 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 ('a7b21ef4205fe1fc1f37da9b2f2a6a73', -1, 1762298691, 1762298691, 'd849d88c', -9, 0, 0)

Line : 187
File : sessions.php