phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '87bcf5c1e60ac3b5ae0794cadda1dc79' 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 ('87bcf5c1e60ac3b5ae0794cadda1dc79', -1, 1762676756, 1762676756, 'd849d8d6', 12, 0, 0)

Line : 187
File : sessions.php