phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'dc9dec8b732fb1379b17dde503ab9587' 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 ('dc9dec8b732fb1379b17dde503ab9587', -1, 1767089360, 1767089360, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php