phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a15bf9dbe8c88e5c7a2f8ac466cf8fe0' 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 ('a15bf9dbe8c88e5c7a2f8ac466cf8fe0', -1, 1714985578, 1714985578, '03914a36', -4, 0, 0)

Line : 187
File : sessions.php