Convert img to url automatically

Hi everyone.

I am trying to convert a img to a url automatically every time we upload or attached an image to a table.

This is the code.


let table = base.getTable("Table1");

let selectedView = table.getView("Shows");

let selectedField = table.getField("Speakers");

let fieldToEdit = table.getField("Speakers URL");

async function convertAttachmentsToUrls() {

    if (selectedField.type !== 'multipleAttachments') {

       console.log("is not an attachment field. Run the script again with an attachment field");       

       }

    // Loads the records and field from the selections above

    let query = await selectedView.selectRecordsAsync({

        fields: [selectedField]

    });

    let records = query.records;

    // Array for records with attachments and their URLs

    let attachmentURLs = [];

    // Loops through qualified records and pushes them to the attachmentURLs array

    for (let i = 0; i < records.length; i++) {

        let recID = records[i].id;

        let attachments = records[i].getCellValue(selectedField);

        if (attachments !== null) {

            let attachmentLength = attachments.length;

            let attachmentURL = '';

            for (let l = 0; l < attachmentLength; l++) {

                attachmentURL += attachments[l].url + ', ';

            }

            attachmentURLs.push({

                id: recID,

                fields: {

                    [fieldToEdit]: attachmentURL.slice(0, -2),

                },

            });

        }

    };

    while (attachmentURLs.length > 0) {

        await table.updateRecordsAsync(attachmentURLs.slice(0, 50));

        attachmentURLs = attachmentURLs.slice(50);

    }

}

await convertAttachmentsToUrls();

// Output message to indicate when the script is done

console.log('Records have been updated with attachment URLs');

This is the error.

Sin título

the trigger is when a record is updated.

Can you help me to solve this issue?