The phrase "a bit of error" is correct and usable in written English.
It can be used to describe a small mistake or inaccuracy in a context where precision is important.
Example: "The report contained a bit of error in the calculations, which affected the final results."
Alternatives: "a small error" or "a minor mistake".
Another potential explanation — or complication — is that there's quite a bit of error in the jobs numbers that the government puts out.
There was a bit of error that crept into our game and we went down to 13 men [Owens and Steven Shingler were yellow-carded in the space of a minute].
Obviously you're going to run into problems with such a small system – the impurities in the plastic and bubbles being of primary concern – but at about $50 a spool, PVC isn't cheap and if you're printing quite a bit of prototype hardware there's room for a bit of error.
December 5 , 20129.39am GMT Jeff Randall, who is presenting the Sky News autumn statement coverage this morning, has just made a bit of an error.
"We've lost a few line-outs, and there has been a bit of individual error, but we are a pack of eight and have to keep working".
"Cadel and three of his guys managed to stay in that group and it was a bit of an error on our part.
Harper's magazine made a bit of an error when it reported a joke story about a Canadian student's "visual allergies" as real.
In between my final exams and graduation, we packed our belongings into boxes, dropped them off at various storage spots around family friends' houses (without noting which stuff went where – that turned out to be a bit of an error) and on the 10th of June 2013, with the very bare necessities, went to our local council authority to tell them we were homeless.
Each link or structure connecting the motors, though, adds a little bit of jiggle -- and consequently, a little bit of error.
