1769139 - Metadata Repository blank screen with "This program cannot display the webpage" message

• Blank Screen in transaction code RSA1 -> Metadata Repository
• BW Metadata Repository displays blank page
• Metadata Repository object list not displaying description
• Tcode RSA1, Metadata Repository doesn't show information
• Metadata Repository Viewer is not displaying results
• Metadata Repository shows: "This program cannot display the webpage"
• After upgrade to BW 7.30, the Metadata Repository Manager does not start
• Error in Metadata Repository.
• "403 - Forbidden" error in Metadata Repository
• 500 SAP Internal Server Error
  ERROR: You are calling this Web site with a browser that is not supported
• The above symptoms can also happen for the Master Data Maintenance Webdynpro application (RSDMD, RSDMDM_MD_MAINTENANCE_APP)
• Getting the dump below:

Category               ABAP programming error
Runtime Errors         RAISE_EXCEPTION
ABAP Program           CL_RSO_GUI_REPOSITORY_HTML====CP
Application Component  BW-WHM-MTD

Short Text: Exception condition "CNHT_ERROR_PARAMETER" triggered

"RAISE_EXCEPTION"                                                          
"CL_GUI_HTML_VIEWER============CP" bzw. CL_GUI_HTML_VIEWER============CM00G
"SHOW_URL"                                                                 
or                                                                         
"CL_GUI_HTML_VIEWER============CP" CNHT_ERROR_PARAMETER
or                    
"SAPLRSO1" "CNHT_ERROR_PARAMETER"

| 6| CALL METHOD get_url_attributes
| 7| EXPORTING
| 8| url = url
| 9| IMPORTING
| 10| r3data = r3data
| 11| datafile = datafile
| 12| absolute_url = absolute_url
| 13| EXCEPTIONS
| 14| cnht_error_parameter = 1.
| 15| IF sy-subrc <> 0.
|>>>>>| RAISE cnht_error_parameter.
| 17| ENDIF.

| 22 METHOD CL_GUI_HTML_VIEWER============CP CL_GUI_HTML_VIEWER============CM00G 16 |
| CL_GUI_HTML_VIEWER=>SHOW_URL |
| 21 METHOD CL_RSO_GUI_REPOSITORY_HTML====CP CL_RSO_GUI_REPOSITORY_HTML====CM00G 29 |
| CL_RSO_GUI_REPOSITORY_HTML=>SHOW_REPOSITORY_HOME |
| 20 METHOD CL_RSO_GUI_REPOSITORY_HTML====CP CL_RSO_GUI_REPOSITORY_HTML====CM00B 39 |
| CL_RSO_GUI_REPOSITORY_HTML=>CREATE_AND_INIT_HTML_VIEWER |
| 19 METHOD CL_RSO_GUI_REPOSITORY_HTML====CP CL_RSO_GUI_REPOSITORY_HTML====CM001 124 |
| CL_RSO_GUI_REPOSITORY_HTML=>CONSTRUCTOR |
| 18 METHOD CL_RSO_GUI_REPOSITORY=========CP CL_RSO_GUI_REPOSITORY=========CM00P 41 |
| CL_RSO_GUI_REPOSITORY=>HTML_CONTROL_SHOW |

• SAP NetWeaver 7.5
• SAP NetWeaver 7.4
• SAP enhancement package 1 for SAP NetWeaver 7.3
• SAP NetWeaver 7.3
• SAP Business Warehouse BW 7.3x (SAP_BW)
• SAP Business Warehouse BW 7.4x (SAP_BW)
• SAP Business Warehouse BW 7.5x (SAP_BW).

Meta data, MTD, CL_RSO_REPOSITORY, ICF, ICM, sub-nodes, 404 not found, AWB, workbench, web dynpro, WDP, HTTP, HTTPS, rso_metadata_repository, HTTPURLLOC, obsolete, sapgui, wdisp/system_x, SRCURL, redirect, WDA. , KBA , "the website cannot display the page" , http 500 , cnht_error_parameter , cl_rso_gui_repository_html====cp , BW-WHM-MTD , Metadata (repository) , BC-WD-ABA , Web Dynpro ABAP , BC-MID-ICF , Internet Communication Framework , BW-WHM-DBA-MD , Master Data , Problem