phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '978bf74b50765c60e719e1004362eda0' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('978bf74b50765c60e719e1004362eda0', -1, 1778303003, 1778303003, '00000000', 19, 0, 0)

Line : 187
File : sessions.php