phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c18f8500d12635fbe76dbf91930080a8' 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 ('c18f8500d12635fbe76dbf91930080a8', -1, 1775426090, 1775426090, 'd849d81b', -4, 0, 0)

Line : 187
File : sessions.php