phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21d03409b53728eba91eabd3c0b308cf' 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 ('21d03409b53728eba91eabd3c0b308cf', -1, 1711622847, 1711622847, '03e64c99', 18, 0, 0)

Line : 187
File : sessions.php