phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '78c5e974f5cc9437cfe1d225c7634502' 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 ('78c5e974f5cc9437cfe1d225c7634502', -1, 1764736666, 1764736666, '00000000', 0, 0, 0)

Line : 187
File : sessions.php