Failed to load resource: net::ERR_HTTP2_PROTOCOL_ERROR when open SAPGUI app from Fiori

[yubbieh]

Good day everyone, we are experiencing issue with SAPGUI in Fiori. Every time we open SAPGUI app from Fiori, it always shows blank and when we checked the error in the console, it always shows Failed to load resources: nett::ERR_HTTP2_PROTOCOL_ERROR 200. Other Fiori apps are fine, it's the transaction/SAPGUI apps that are affected. 

Below, we tried to open TCode 'BP' from Fiori:

TCODE BP from Fiorierrors in console taberrors in network tab

The tile:

target application fieldstiles

What troubleshooting steps can I take to identify the root cause of this issue? Thank you for your time and attention.

Regards.

Our system: 

• Fiori Embedded
• DEV client
• SAP S/4HANA 2022 SP03 (on premise)
• SAP FIORI FES 2022 FOR S/4HANA SP03
• ABAP PLATFORM 2022 SP03
• SAP S/4HANA FOUNDATION 2022 SP03
• SAP FIORI FOR SAP S/4HANA 2022 SP03
• SAPUI5 1.108.22 (202308300810)