phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c2018ea392ad21d0c9b226ceb5f76bb9' 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 ('c2018ea392ad21d0c9b226ceb5f76bb9', -1, 1776597338, 1776597338, 'd849d8d3', -4, 0, 0)

Line : 187
File : sessions.php