Solution : https://service.sap.com/sap/support/notes/318352 (SAP Service marketplace login required)
Key words : 
-closed character string constant javascript error messagethe error message appears, -closed character string constant javascript error message terminating, access denied javascript error message, bex browser missing icons changing html templates, \programmdateien\sappc\bw\dswmedia\bxbrowsr, access denied javascript error messageif, ~client~login~password~languageall entries, /mimes/webgui/99/images/icons/bw/, solution general note overview prerequisites 1, \mimes\webrfc\bw\cluster<www_root>
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