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ea don t take trade

my ea don t take any trade can you help me thanks

CIdicator::GetData:Invalid buffer

when i run my strategy tester i have in the journal : CIdicator::GetData:Invalid buffer please can you help me thanks

ExpertTrade.mqh

when i compile my program there is a error : can't open "C:\Users\MON\AppData\Roaming\MetaQuotes\Terminal\D0E8209F77C8CF37AD8BF550E51FF075\MQL5\include\Expert\ExpertTrade.mqh" include file Expert.mqh i don t find ExpertTrade.mqh in my folder Expert why ? thank you