Here is my code. The imageChunks state variable is not updating correctly. Selecting an image returns an empty array. Selecting another image returns an array of the last image's base64 chunks. It seems that setImageChunks() is not triggering a re-render. What is causing this? Any help would be appreciated.

const [ imageChunks, setImageChunks ] = useState([])
    
const handleImageChange = async (e) => {    
            const files = e.target.files
    
            // Break image base64 string into chunks for database upload, store each in object with series (filename) and part
            const getChunks = (filename, baseStr, chunkSize) => {
                const str = baseStr.split("")
                const chunks = []
                let part = 0
                let count = str.length
                let start = 0
                while (count){
                    part++
                    start = str.length - count
                    const allowedCount = count < chunkSize ? count : chunkSize
                    chunks.push({
                        series: filename,
                        part: part,
                        data: str.slice(start, start + allowedCount).join("")
                    })
                    count -= allowedCount
                }
                
                return chunks 
            }
    
            // empty imageChunks array to prepare for new file selection
            const fileChunks = []
    
            for (let i = 0; i < files.length; i++){
                // Push file name to product object imageFiles array  
                const fileNames =  formValues.imageFiles
                fileNames.push(files[i].name)
                setFormValues({...formValues, imageFiles: fileNames})
    
                // get array of file chunk objects, push to imageChunks array
                const file = await new Response(files[i]).arrayBuffer()
                const baseString = Buffer.from(file).toString('base64')
                const chunks = getChunks(files[i].name, baseString, 10000)
    
                fileChunks.push(chunks)
            }
    
            setImageChunks(null)
            setImageChunks([...fileChunks])
            console.log(imageChunks)
        }