Whenever an unhandled error occurs I get following screen instead of yellow screen.
1zcwt.png (120.4 KB)
Please note I have enabled Localization in boilerplate and current language/culture is set to en-US.
For some pages the language text values are stored in AbpLanguageTexts table
I have observed the issue shared by you and have not been able to completely understand your requirements. Can you please elaborate that which API you are using on your end along with sample application, source file and generated output. We will be able to investigate the issue further on our end on provision of requested information.