Three approval conditions should work together and shuould be auto approved

Summary:

Content (required): We have three approval conditions out of which 1st condition is not working and getting errored out when keeping the other 2nd and 3rd approval rule condition active. FYI, it is working fine in case, we are keeping other two conditions inactive .

1. when the line manager of the employee for which perf evaluation is going on is CEO, it should be auto approved: the approval condition we are using is : { (transactionApprovalRequest.attribute7 == "") }
2. When the second line manager of the employee for which the employee is going on , is CEO, it should be auto approved: the approval condition we are using is : { ( Requestor's Manager.Position == "CEO") }