JSON Data display from database

Good Day,
I'm having problems to display the JSON string in my database this is what the code looks like:
$display = new WA_MySQLi_RS("display",$valostaradmin,0);
$display->setQuery("SELECT * FROM `dvinspection` WHERE `id` = 11");
$display->execute();

When I do json decode withj php it doesnt display like it is suppose to. Do you have any advise that can make it work?

Thank you for all your help until now.

Daniel.

This is what the string looks like in the MySQL database:
{"date":"2023-03-16","manager":"\u00a0Daniel Snyman","driver":"Japie Pretorius","regNr":"123GP","model":"Mercedes\n","engineOil":"engineOil","hydraulicOil":"hydraulicOil","htf":"htf","coolant":"coolant","radiator":"radiator","batterySecWatLev":"batterySecWatLev","batteryPolesClamps":"batteryPolesClamps","wheelsNuts":"wheelsNuts","mastCarriageRollers":"mastCarriageRollers","operatorSeat":"operatorSeat","hydrCylindSteering":"hydrCylindSteering","hydrHoses":"hydrHoses","airFilter":"airFilter","brakeFluid":"brakeFluid","brakesHandbrake":"brakesHandbrake","hourMeterGauges":"hourMeterGauges","lightsHooter":"lightsHooter","leversControls":"leversControls","footPedals":"footPedals","beaconLightOrange":"beaconLightOrange","trailerPlug":"trailerPlug","serviceBook":"yes","radioFaceWorking":"yes","spareWheel":"yes","jackAndTools":"yes","triangle":"yes","fireExtinghuiser":"yes","HMRStart":"777","HMRFinnish":"555","drivSignature":"Japie Pretorius","supervSignature":"Daniel Snyman"}

If I copy this string from the broswer and display it with json decode as a normal php array it works fine. But if I try directly through the first code example that I showed it doesnt work with json decode.

Try this <?php echo json_decode($display->getColumnVal("field_holding_json",false)); ?>

Thank you Dave Buchholz, Jesus Christ thankfully helped me before you gave me this answer. But thank you for your help I appreciate it.

Thanks Dave! Long time no see