From the documentation:
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numberOfTicks: int. If a non-zero value is entered, then historical tick data is first returned via one of the? ? respectively. (Max number of historical Ticks is 1000)
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I'm not getting an error anymore because I did not have the tick type set to midpoint. But I submitted a ticket for that. However, I'm more interested in how anybody is processing the data they are receiving. I can't find anything about MPL, Plotly, or MPLFinance on this site