Why does display the value of a expression tag in tag browser need more than five minutes?

Hi, Every one~

When a new expression tag has been created, I have to waiting for it long time every time and always can see a red color symbol of ‘!’ over there.
such as:
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thank you.

This works for me if you just want the current month. There is probably an error in your expression but you don’t show the whole thing.

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thank you.The value of the expression is dataFormat(now(), “yyyy-mm”), After a few hours, it has a result but wrong.
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As you see, the pattern part of the function should be written in capitals.
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The expression is right now, but time is still a problem?

I’m not sure why it’s not updating quickly. I put the same expression in and it updates instantly. You have a tag group assigned but your execution rate is fixed, still shouldn’t be a problem. What do you see if you look in the tag diagnostics for one of the tags that has the error on it?

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