phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '594bae6b465b626bfb75a69ad8ccb9de' 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 ('594bae6b465b626bfb75a69ad8ccb9de', -1, 1768313918, 1768313918, 'c0a8100c', 13, 0, 0)

Line : 187
File : sessions.php