Answer:
The kind of error that needs to be fixed is:
3 verb tense inconsistencies
Step-by-step explanation:
There are no run-on sentences, misspellings, or sentence fragments in the paragraph we are analyzing here. There are, however, verb tense inconsistencies. The narration begins in the past tense but, all of a sudden, a verb in the present appears. The pattern repeats throughout the passage, with verbs in the past and in the present being alternated. A way to correct such inconsistencies would be by simply using only past forms for all the verbs:
Roland was walking through the desert. The sun was setting, and he felt a chill. He carried his telescope and star map with him. He found the perfect spot, level and away from the road, and set up his tripod. He sat on the ground, crossed his legs, and waited for night to fall.