phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'c4d5bd9def0dac57f8cf90a3d3c4c093' 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 ('c4d5bd9def0dac57f8cf90a3d3c4c093', -1, 1752792769, 1752792769, 'd849d8a7', -9, 0, 0)

Line : 187
File : sessions.php