phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c1df15f93d1bd4b9f4f40746dbdf84d0' 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 ('c1df15f93d1bd4b9f4f40746dbdf84d0', -1, 1715040391, 1715040391, 'c0a80201', -4, 0, 0)

Line : 187
File : sessions.php