<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;"><span style="color: #abb0b5;"><span style="font-size: 15px; letter-spacing: -0.3px; white-space: pre-wrap;">truffle migrate --network development</span></span></div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">&nbsp;</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;"><span style="color: #abb0b5;"><span style="font-size: 15px; letter-spacing: -0.3px; white-space: pre-wrap;">이것을 입력했더니,</span></span></div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">&nbsp;</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">&nbsp;</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;"><span style="color: #abb0b5;"><span style="font-size: 15px; letter-spacing: -0.3px; white-space: pre-wrap;">Something went wrong while attempting to connect to the network at http://127.0.0.1:7545. Check your network configuration. Could not connect to your Ethereum client with the following parameters: - host &gt; 127.0.0.1 - port &gt; 7545 - network_id &gt; 5777</span></span></div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">&nbsp;</div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;"><span style="color: #abb0b5;"><span style="font-size: 15px; letter-spacing: -0.3px; white-space: pre-wrap;">이러한문구가끕니다..</span></span></div>
<div class="type-placeholder" style="font-size: 15px; letter-spacing: -0.3px; color: #abb0b5; white-space: pre-wrap;">&nbsp;</div>

<p>메시지 내용 그대로 보면 로컬 네트워크에 연결이 안된 것 같은데, Ganache가 실행되어 있는지 확인해보세요.</p>

인프런 커뮤니티 질문&답변

truffle migrate --network development 입력했더니