phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a255b665803fe853b7aac6299169066f' 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 ('a255b665803fe853b7aac6299169066f', -1, 1765664627, 1765664627, 'd849d868', 2, 0, 0)

Line : 187
File : sessions.php