phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9a78fa1310c9a14cc0d133fab1846ad4' 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 ('9a78fa1310c9a14cc0d133fab1846ad4', -1, 1762590075, 1762590075, '7f000001', -9, 0, 0)

Line : 187
File : sessions.php