multiple socket address usage error - using rpc to index block hashes

When I am attempting to index and create an array out of all the blockhashes on the blockchain I keep getting this error:

"[WinError 10048] Only one usage of each socket address (protocol/network address/port) is normally permitted"

        block_counter = 0
        total_blocks = rpc_connection.getblockcount()
        while block_counter < total_blocks:
            block_hash = rpc_connection.getblockhash(total_blocks)
            blockHashArray = np.append(blockHashArray, block_hash)

Am I getting this error due to an incoming transaction on my node? If so, how can I get around this issue?



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