Analyze this sentence and identify errors in grammar, punctuation, and spelling.
I saw him yesterday and he said hi
This sentence has a punctuation error. It is missing a period (or full stop) at the end. Below is the corrected sentence:

"I saw him yesterday and he said hi."
Complete the following task based on the instruction and optional input provided.### Instruction:
Analyze this sentence and identify errors in grammar, punctuation, and spelling.

### Input:
I saw him yesterday and he said hi

### Output:
This sentence has a punctuation error. It is missing a period (or full stop) at the end. Below is the corrected sentence:

"I saw him yesterday and he said hi."