UEFA declare Champions League Round of 16 draw Null and Void after Error

Following an error with English team, Manchester United, the initial 2021 UEFA Champions League Round of 16 draws has been declared null and void.
After a “material error” that left Manchester United out of a portion of the draw, the UEFA Champions League round of 16 draws has been declared null and void.
At around 15:00 CET, the round of 16 will be completely redone.
“A material error occurred in the draw for the UEFA Champions League Round of 16 as a result of a technical malfunction with the software of an external service provider that notifies the officials as to which clubs are qualified to face each other,” UEFA stated in a statement.
A tweet on the official UEFA Twitter page reads,
“Following a technical problem with the software of an external service provider that instructs the officials as to which teams are eligible to play each other, a material error occurred in the draw for the UEFA Champions League Round of 16.
“As a result, the draw has been ruled null and void, and it will be completely redrawn at 1500 CET.”