Using DateFormat with locale causes FormatException: Trying to read yyyy from 2020-08-07 15:00 at position 0

I'm enable to do use DateFormat in flutter when am using the locale as 'ar' which is RTL locale .. here is my code :

String finalDatetime = '$dateString $timeString';
DateTime tempDate = new DateFormat("yyyy-MM-dd hh:mm").parse(finalDatetime);
String formattedDate = Intl.getCurrentLocale() == 'en' ? DateFormat('dd-MM-yyyy – hh:mm').format(tempDate)
:DateFormat.yMMMd('ar').format(tempDate);

I'm getting the error in this line :

DateTime tempDate = new DateFormat("yyyy-MM-dd hh:mm").parse(finalDatetime);

The error

FormatException: Trying to read yyyy from 2020-08-07 15:00 at position 0

NOTES

• It works perfectly when the locale is set to 'en'
• The date string is being fetched from a database which is always sent as 2020-08-07 15:00

as Jamesdlin mentioned on his comment, using Intl.withLocale fixed the problem

DateTime tempDate =Intl.withLocale('en', () => new DateFormat("yyyy-MM-dd hh:mm").parse(finalDatetime));