The reading itself is fine, but you have exported the MP3 with bit rate as 107 kbps and variable, we need it to be 128 kbps and constant. Also your volume is a little high at 92.4
If you could please re-export it with the correct technical settings, adjust the volume as outlined below, and re-upload.
A good practice is to install the Checker app on your computer. It is used to check the technical settings of your recordings, including the volume. It can be found here, along with instructions for use... https://wiki.librivox.org/index.php?title=Checker
Its three general outcomes are "PASS", "FAIL", and "PASSED WITH WARNINGS". A "FAIL" probably means the tech settings are wrong. A "PASSED WITH WARNINGS" probably means the recording is either too loud or too soft ... when this is the case, the MP3 can be easily fixed using the MP3GAIN app, which you should also install on your computer. It can be found here... https://mp3gain.en.softonic.com/
Set the Target Normal Volume to 89.0, run a Track Analysis, then if it's not 89, run a Track Gain, and it will adjust your MP3 file to approx 89. Very quick and easy. Now run the adjusted MP3 file through the Checker app again, and the “PASSED WITH WARNINGS” message should be replaced by a “PASS” message.
If you have any questions, please don't hesitate to ask.