phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7876463da89e8e2d954c4d358a63b1e1' 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 ('7876463da89e8e2d954c4d358a63b1e1', -1, 1762896030, 1762896030, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php