phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'f6b504dbb8364e66695f0e6e4a385e08' 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 ('f6b504dbb8364e66695f0e6e4a385e08', -1, 1757782372, 1757782372, 'd849d822', -4, 0, 0)

Line : 187
File : sessions.php