phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7a49649b53f8f8914fe397c4af21929a' 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 ('7a49649b53f8f8914fe397c4af21929a', -1, 1768111817, 1768111817, 'd849d805', 1, 0, 0)

Line : 187
File : sessions.php