phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c53912e1db3813ce10c7c0da361fcbe9' 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 ('c53912e1db3813ce10c7c0da361fcbe9', -1, 1770118817, 1770118817, 'c0a8100b', -501, 0, 0)

Line : 187
File : sessions.php