Warning: Return value of low-level calls not used.

[Pfed-prog]

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:665:13:
|
665 | payable(transaction.receiver).call{value: receiverFee}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:686:13:
|
686 | payable(transaction.sender).call{value: senderFee}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:806:13:
|
806 | payable(transaction.sender).call{value: extraFeeSender}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:814:13:
|
814 | payable(transaction.receiver).call{value: extraFeeReceiver}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:843:13:
|
843 | sender.call{value: senderFee}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:846:13:
|
846 | receiver.call{value: receiverFee}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:856:13:
|
856 | sender.call{value: splitFeeAmount}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:857:13:
|
857 | receiver.call{value: splitFeeAmount}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Warning: Return value of low-level calls not used.
--> contracts/TalentLayerEscrow.sol:1105:13:
|
1105 | _recipient.call{value: _amount}("");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[Pfed-prog]

By example: the first warning instance payable(transaction.receiver).call{value: receiverFee}(""); fixed by
payable(transaction.receiver).transfer(receiverFee)

After fixing all warnings, the TalentLayerEscrow reduced to 23.149.
TalentLayerEscrow gas also reduced to 5198083

#126

[Pfed-prog]

Or

(bool success, ) = msg.sender.call.value(amount)("");
require(success, "Transfer failed.");

solve warning

[0xRomain]

Handle the answer of the call bring some critical issues as now the receiver can break any function using it