phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9fb50498a7691ad861c4f46ddb58afa8' 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 ('9fb50498a7691ad861c4f46ddb58afa8', -1, 1765940551, 1765940551, 'd849d816', -4, 0, 0)

Line : 187
File : sessions.php