Perhaps Pixar worker overlooked unlit mountain trail in error (8)
I believe the answer is:
animator
'perhaps pixar worker' is the definition.
I can't judge whether this defines the answer.
'overlooked unlit mountain trail in error' is the wordplay.
'overlooked' is a deletion indicator.
'in error' is an anagram indicator.
'mountain'+'trail'='mountaintrail'
'mountaintrail' with 'unlit' removed is 'moantrai'.
'moantrai' is an anagram of 'ANIMATOR'.
Can you help me to learn more?
(Other definitions for animator that I've seen before include "Park, perhaps" , "Disney maybe" , "Cartoon film artist" , "Walt Disney, perhaps?" , "Artist drawing for cartoon films" .)