phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3978d58dcc83014c881c20fd4fa6b4e0' for key 'PRIMARY'

INSERT INTO phpbb_fastsessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3978d58dcc83014c881c20fd4fa6b4e0', -1, 1714971423, 1714971423, '12dc10b8', -4, 0, 0)

Line : 187
File : sessions.php