3471940 - "500 Internal Server Error" error occurred on the browser and CL_ICF_NW07_LOGIN error occurred in work process trace on SAP_BASIS 758

"500 Internal Server Error" error occurred when run SOAMANAGER on the browser. 

The system is on SAP_BASIS 758. 

The "Delete ABAP session Txx_Uxxxx_M0 (Info = Error Message [Error/Core]" error occurs in SM21 system log. 

The following error occurs in the relevant work process trace. 

--------------------------
A  *GENER* locking program CL_ICF_NW07_LOGIN=============CP on secondary connection.
A  *GENER* request remote generation: CL_ICF_NW07_LOGIN=============CP.

A  DiagGetLoginQuietMode == TRUE, no rabax)
A  error during logon
A    cfunction CaughtSyntaxError::rabax
A    errcode   SYNTAX_ERROR
A    cline     xxx
A    cmodule    $Id: //bas/GIT/krn/abap/runt/abcatchsyntaxerror.c#0 $ SAP
--------------------------

500 Internal Server Error, SAP_BASIS 758, 758, ABAP webdynpro, SICF, CL_ICF_NW07_LOGIN, CL_ICF_NW07_LOGIN_HASH , KBA , BC-CST-IC , Internet Communication Manager , BC-MID-ICF-LGN , ICF System Login , Problem