ASP 0104 appears in the upload function and does not allow operation

Reason: IIS has a limit on the size of uploaded files. The

solution is as follows:
Step 1: Modify the iis settings to allow direct editing of the configuration database (open the IIS right-click server settings).
Step 2: Stop the iis admin service service and find the metabase.xml under windows\system32\inesrv. Find aspMaxRequestEntityAllowed and change it to the required value. The default is 204800, or 200k. If you change it to 51200000 (50m).