phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '507b3b65f29db3b79358434ee2c03bd8' 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 ('507b3b65f29db3b79358434ee2c03bd8', -1, 1769371719, 1769371719, 'd849d814', -4, 0, 0)

Line : 187
File : sessions.php