phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '18cef8db71e912703b4daf2c2f0eb2cc' 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 ('18cef8db71e912703b4daf2c2f0eb2cc', -1, 1765797683, 1765797683, 'd849d836', -4, 0, 0)

Line : 187
File : sessions.php