What is "Err(0xE), 0 @ LocHB 71B4903C-14EC-42C4-BDC6-CE1449930E49"?

[rdsgalid]

Hi, trying to boot Catalina 10.15.3 with OpenCore 0.5.7 without success. It's Microsoft Surface Pro 2017 (i5 7300U. ALC298, HD620). Thing is, it hack well with Clover but stuck with OpenCore. Last line in bootlog is as below. May I ask this is related to what problem? IGPU? SMC Keys? I have no inkling--It just refuse to proceed beyond this stage. Any pointer is much appreciated. Thanks!

 

35:387 00:044 OC: Prelink injection WhateverGreen.kext () - Success
35:547 00:160 Prelinked status - Success
35:593 00:045 AAPL: [EB|`LD:LKFS] } Ok(0)
35:625 00:032 AAPL: [EB|`LD:LKC] } Ok(0)
35:699 00:073 AAPL: [EB|#FWFM] 0xFF1FFF3F
35:730 00:031 AAPL: [EB|#FWFT] 0xFD0FF536
35:802 00:072 AAPL: [EB|#CSR:OUT] 0x00000067
35:835 00:033 AAPL: [EB|`BST:FBS] {
35:867 00:031 AAPL: [EB|`BST:FBS] BA.ADSZ: 0
35:938 00:071 AAPL: [EB|`BST:FBS] BA.KSDSZ: 0
35:971 00:032 OCSMC: SmcReadValue Key 4D535463 Size 1
36:043 00:072 OCSMC: SmcReadValue Key 4D534163 Size 2
36:075 00:032 AAPL: [EB|`B:WFDW] Err(0xE), 0 @ LocHB 71B4903C-14EC-42C4-BDC6-CE1449930E49