Miles and mpg of fill up missing

[srellim234]

I've used the site for a few years and really like it. Today I had a strange occurrence. After keying in my fill up (on a PC, not the mobile app), both the miles and the mpg calculations for it came up blank. I double-checked that I didn't have the partial fill box checked and the mileage entered was correct; I hadn't transposed any numbers.

Today's fill was 136774 miles, $3.459/gal, 7.886g, $27.28 total (which Fuelly calculated correctly.

Previous fill was at 136430 miles, etc. etc.

Any idea why it didn't calculate the 344 miles on this tank and figure the mpg?