phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '0f6ceeae08236ecccd05a0d8f5dc4619' 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 ('0f6ceeae08236ecccd05a0d8f5dc4619', -1, 1770892705, 1770892705, 'd849d821', 9, 0, 0)

Line : 187
File : sessions.php