This is not an error message. It is a message informing you that the account loss fell enough to trigger the Minimum Equity value which then closed the position and turned off the EA so it would no longer trade which could have caused a greater loss if it did not turn off the EA from trading. What lot size were you using for this EA? It should have been set to 0.7 lots. If it was set to 0.7 lots for AUDCHF with account size of 50K then you might consider reducing the lot size so this does not happen again.
Alan,