Error: Exported bands must have compatible data types; found inconsistent types: Float32 and Byte - google-earth-engine

Question

I'm new to use Google Earth Engine and trying to export satellite image dataset to my google drive folder. But I'm getting the error below.
Error: Exported bands must have compatible data types; found inconsistent types: Float32 and Byte.
This is my code.
var dataset = ee.ImageCollection('FIRMS')
.filterDate('2021-04-01', '2021-11-10')
.filterBounds(roi)
.sort('CLOUD_COVER')
.first()
var fires = dataset.select('T21');
var firesVis = {
min: 325.0,
max: 400.0
};
Map.addLayer(fires.clip(roi), firesVis, 'California Fires 2021');
Map.centerObject(roi,15);
// Export data to google drive
Export.image.toDrive({
image : fires,
description : 'California_wildfires_2021',
scale : 30,
region : roi,
maxPixels : 1e13
})
Any help is appreciated.
Also please let me know how to convert the tiff files to images(png/jpeg/jpg).

Answer 1

Now, add any shapefile or roi and try it.
In the middle of the code their I had used max(),there you can use mean(), median() and min() etc.,
here is the code:
var dataset = ee.ImageCollection('FIRMS').filter(
ee.Filter.date('2021-04-01', '2021-11-10'));
var fires = dataset.select('T21').max().clip(shp);
var firesVis = {
min: 325.0,
max: 400.0,
palette: ['red', 'orange', 'yellow'],
};
Map.centerObject(shp, 6);
Map.addLayer(fires, firesVis, 'Fires');
// Export data to google drive
Export.image.toDrive({
image : fires,
description : 'California_wildfires_2021',
scale : 1000,
region : shp,
maxPixels : 1e13
});