The problem is with the string

"C:\Users\Eric\Desktop\beeline.txt"

Here, \U in "C:\Users... starts an eight-character Unicode escape, such as \U00014321. In your code, the escape is followed by the character 's', which is invalid.

You either need to duplicate all backslashes:

"C:\\Users\\Eric\\Desktop\\beeline.txt"

Or prefix the string with r (to produce a raw string):

r"C:\Users\Eric\Desktop\beeline.txt"

The "SyntaxError: (Unicode error) '<a href="https://net-informations.com/python/err/codec.htm" target="" title="">unicodeescape</a>' codec can't decode bytes in position 2-3: truncated \uxxxxxxxx escape" error occurs when Python encounters a string with an incomplete Unicode escape sequence, typically in the form of "\u" followed by hexadecimal digits. To fix this error, you should either provide a complete Unicode escape sequence (e.g., "\uXXXX" where XXXX represents four hexadecimal digits) or use a raw string by prefixing the string with "r" to avoid interpreting backslashes as escape characters. For example, if you intended to use a backslash in the string, you can write it as "\" or use a raw string like r"". Ensure that any Unicode escape sequences in your code are correctly formatted to resolve this error.