Error 4109 is ERR_TRADE_NOT_ALLOWED according to Expert Advisor MetaTrader Error Codes which is a site you may need to bookmark
As to why, I do not know sorry.
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Hi,
Why if i run the script it doesn't work?![Sad](https://c.mql5.com/smilies/sad.gif)
it says : Error 4109. Is something with with the code?