phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6c15a0f7b4e0d552024b7db238054880' 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 ('6c15a0f7b4e0d552024b7db238054880', -1, 1755182140, 1755182140, 'd849d8b6', -9, 0, 0)

Line : 188
File : sessions.php