phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a49c17a5f9aa7aab8aeb19f2ef328db7' 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 ('a49c17a5f9aa7aab8aeb19f2ef328db7', -1, 1765782563, 1765782563, 'd849d850', 2, 0, 0)

Line : 187
File : sessions.php