phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ecf15cdc7d3d2a0d4b716e4b9e4cd4de' 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 ('ecf15cdc7d3d2a0d4b716e4b9e4cd4de', -1, 1766192476, 1766192476, 'd849d819', 10, 0, 0)

Line : 187
File : sessions.php