Error: Error Parsing Xml: Not Well-Formed (Invalid Token) ...

error: Error parsing XML: not well-formed (invalid token) ...?

It means there is a compilation error in your XML file, something that shouldn't be there: a spelling mistake/a spurious character/an incorrect namespace.

Your issue is you've got a semicolon that shouldn't be there after this line:

  android:text="@string/hello";

Android XML Parsing Error (invalid token, not well formed)

You need to replace the & with & in your xml file.

You can refere the below link for a list of characters that need to be escaped in xml:

XML Character Escape List

Error parsing XML: not well-formed (invalid token) …?

At the end of your XML, change

</>

</RelativeLayout>

That is the correct syntax for the closing tag of your RelativeLayout https://www.w3schools.com/xml/xml_syntax.asp

Python xmltodict.parse returns Exception not well-formed (invalid token): line 6, column 15

Have you tried just replacing the problematic character?

xmltodict.parse(response.text.replace('\x07', ''))

AAPT: error: not well-formed (invalid token)

The second-to-last line of your file has

</>

which causes your XML file to be not well-formed. Change it to

</androidx.constraintlayout.widget.ConstraintLayout>

to properly close a previous opening tag of the same name.

XML parsing error: not well-formed (invalid token) for id element

Please try the following. You need to use the & entity for each ampersand symbol.

<id>https://omissis.invalid/track/click?u=2bfa40e46beb7840286deead5&id=fe176e8c71&e=317c895d8d</id>

Android Studio Error parsing XML: not well-formed (invalid token)

It's the "&" symbol in the string on line 12. You can delete it to verify this.

The solutions (here) are to use & instead of &,

android:text="Save & Submit"

or to use the unicode \u0026 character

android:text="Save \u0026 Submit"