Abuse to Bitcoin address

Notice: Trying to access array offset on value of type null in /home/saytodor/checkbitcoinaddress.com/bitcoin-abuse.php on line 81

Fatal error: Uncaught Error: Call to a member function fetch_array() on bool in /home/saytodor/checkbitcoinaddress.com/bitcoin-abuse.php:83 Stack trace: #0 {main} thrown in /home/saytodor/checkbitcoinaddress.com/bitcoin-abuse.php on line 83