Can't open a file saved with LibreOffice

When the file opens, I get ############################################################YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
How can I restore the original text?

Please upload the file for someone to check. From my perspective this isn’t a .ODT file or it is a corrupt file. Please edit your question and use the clip symbol to upload your file. Do not post an answer.

The file is almost certainly corrupted - see [Tutorial] The Dreaded Pound Signs: file reduced to ####]([Tutorial] The Dreaded Pound Signs: file reduced to #### (View topic) • Apache OpenOffice Community Forum) for some help