phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3c9cc953a4d96e0481dc1cdb2b1c3634' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3c9cc953a4d96e0481dc1cdb2b1c3634', -1, 1761841909, 1761841909, 'd849d838', -4, 0, 0)

Line : 187
File : sessions.php