phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b020b09af2f7a1398c10e4d068e3944b' 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 ('b020b09af2f7a1398c10e4d068e3944b', -1, 1770507230, 1770507230, 'd849d88f', -4, 0, 0)

Line : 187
File : sessions.php