phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c77dfc79f5ac4bbfec33a2b17ce42002' 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 ('c77dfc79f5ac4bbfec33a2b17ce42002', -1, 1789612484, 1789612484, 'd849d9a5', -4, 0, 0)

Line : 187
File : sessions.php