I often hear these mistakes made by German speakers who are learning English.
They say: The report was written from my colleague.
Remember when we are talking about who wrote something (a report, a document, a book, a file, an email etc.) we need to use the preposition ‘by’.
Correction: The report was written by my colleague.
Further examples:
This book was written by a friend of mine.
These emails were all written by my boss.
Have fun learning English!
Louise