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General errors
If there is an error in writing the CustomEMA formula in the MoonBot terminal on the Filters / Base tab of the strategy settings, for example, as in your case, a dot is indicated instead of a comma, then the entry in the filters on the chart will be displayed as follows:
EMA Filters: CustomEMA: Wrong EMA formula (no comma) (EMA(5m.1)>-1)
To correct the error, replace the dot with a comma in the formula.