phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '602060e48d1d40bc1b3dd514b5b1e6c7' 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 ('602060e48d1d40bc1b3dd514b5b1e6c7', -1, 1767082056, 1767082056, 'd849d82e', -4, 0, 0)

Line : 187
File : sessions.php