phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '7a878a9f9b96b35e34f8c89160651b20' 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 ('7a878a9f9b96b35e34f8c89160651b20', -1, 1740932016, 1740932016, '038dbe4a', 1, 0, 0)

Line : 187
File : sessions.php