phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f6b2261789cd1a021eb714de318de269' 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 ('f6b2261789cd1a021eb714de318de269', -1, 1771110504, 1771110504, 'd849d800', -9, 0, 0)

Line : 187
File : sessions.php