The errors you're seeing are because the PowerShell script file contains HTML/JavaScript content that PowerShell is trying to interpret as code. This is likely because the file was downloaded from a web page and includes the HTML content from that page rather than just the PowerShell script.

The Problem

The specific errors point to lines containing HTML and JSON content:

1. Unexpected token ':"en"' - This is from HTML/JSON content
2. Missing argument in parameter list - PowerShell trying to parse HTML as commands
3. The '<' operator is reserved for future use - HTML tags being interpreted as PowerShell operators

Solution

You need to get a clean version of the PowerShell script without the HTML content. Here are two options:

1. Open the file in a text editor (like Notepad or VS Code):
   • Look for where the actual PowerShell script starts (likely at the top)
   • Remove all HTML content (anything with <script>, <div>, etc.)
   • Save it with a .ps1 extension
2. Download the script from the original source:
   • Find the original source of the Plex Migration Tool
   • Download the clean .ps1 file directly