phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5607202cc4aa2c40e3413b467eb09ec8' 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 ('5607202cc4aa2c40e3413b467eb09ec8', -1, 1768213872, 1768213872, 'd849d887', 4, 0, 0)

Line : 187
File : sessions.php