my expert error: "cannot load indicator 'Bollinger Bands' [4801]

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hi.

I reinstalled meta trader 5 and during test my expert, this error accures.

how can i fix it?


 

Hi,

As you could find it in MQL5 reference,this error is for "unknown symbol" :

ERR_INDICATOR_UNKNOWN_SYMBOL 4801 Unknown symbol

You would check the symbol that should be passed in valid string format,

Regards!

 
Have you try to load BB template first and then attach your EA.
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