phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4dab0949f0db85c7b7d2e72075e60521' 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 ('4dab0949f0db85c7b7d2e72075e60521', -1, 1768669084, 1768669084, 'd849d8d9', 45, 0, 0)

Line : 187
File : sessions.php