You can also temporarily set mempoolfullrbf=1 option to let your node accept replacement to transactions without opt-in rbf flag.
Sign the transaction LoyceV provided you (output checks out), then broadcast it to your node's mempool.

Follow these simple steps:

• Go to "Settings->Options...", click "Open Configuration File" and your 'bitcoin.conf' file should open with your text editor.
• In your config file, type: mempoolfullrbf=1 in a new line and save it.
• Close Bitcoin Core, wait for it to properly close, then launch it again.
• Once running, Open Core's console in "Window->Console", make sure that the correct wallet is selected in the console's drop-down menu;
  Then type the command: signrawtransactionwithwallet "unsigned_raw_transaction" to sign the transaction above.
• Copy the resulting signed raw transaction hex and use the command: sendrawtransaction "signed_raw_transaction" to broadcast it to your node and relay it to your peers.