Update README.md

README.md

@@ -81,6 +81,7 @@
 1. Clone the Repository (```git clone http://123.207.147.179:8888/chenjinjing/shouzhouServer.git```)
 2. In the root directory, run ```npm install```
 3. Using VScode IDE, press F5 to start the server.
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 ## Error Code:
 - 501: The Excel file storing the data is missing
 - 502: The Excel sheet doesn't exist in the Excel file (Excel file is corrupted)