Strategy Tester displaying many vertical lines buying and selling positions at a loss on the 15.06.21 and I don't know why

 

On the 1 min EUR/USD chart, on the 15.06.2021 around 16:30, in my strategy tester there appears to be a huge amount of immediate sells opening low and buys closing high for no reason what so ever.

What is up with that?

The strategy worked fine on every other day beginning June until this day when it turned everything negative.

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Chris Kowalski :

On the 1 min EUR/USD chart, on the 15.06.2021 around 16:30, in my strategy tester there appears to be a huge amount of immediate sells opening low and buys closing high for no reason what so ever.

What is up with that?

The strategy worked fine on every other day beginning June until this day when it turned everything negative.

Probable reason: lack of control of the chain: issuing a trade order - execution of a trade order.

Reason: