phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f4d1e75e03cc5e2329143b5381a75318' 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 ('f4d1e75e03cc5e2329143b5381a75318', -1, 1767925966, 1767925966, 'd849d887', 12, 0, 0)

Line : 187
File : sessions.php