phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '8fdfed4e450c1deb622a9d04814ccb70' 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 ('8fdfed4e450c1deb622a9d04814ccb70', -1, 1769968018, 1769968018, 'd849d822', -4, 0, 0)

Line : 187
File : sessions.php