phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c0cbfd58e794afc1017188d98f69d3ed' 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 ('c0cbfd58e794afc1017188d98f69d3ed', -1, 1768077728, 1768077728, 'd849d887', -9, 0, 0)

Line : 187
File : sessions.php