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[MULTICURRENCYWALLET] Invalid character in header field name
#RC#
A common source of frustration is the lack of clear feedback when a blockchain transaction reverts. Always verify the MultiCurrencyWallet contract address before sending any significant amount of assets. The best approach is to wait for the network’s base fee to stabilize before re-trying the call. Many failed attempts are due to the wallet not having enough “approval” range.
Always check if MultiCurrencyWallet is compatible with the latest version of your hardware wallet. Testing the fix on a dev-net is the standard procedure for advanced users. The error message you see is often just a simplified description of the internal revert. Make sure you are not trying to swap more than the available liquidity allows .
A mismatch between the dApp’s frontend and the backend contract can cause a total halt.
