Generated source map does not specify sources properly

Hello.
I have compiled my c++ project to wasm file and and then I load it to html.
No compile Errors detected but have some Runtime Errors when execution.
So I need to debug it but it appears that generated source map doesn't match with source files.

I compiled source with following flags.

` -g4 -v -s WASM=1 -s SAFE_HEAP=0 -s TOTAL_MEMORY=1024mb -s TOTAL_STACK=64mb -s LLD_REPORT_UNDEFINED -s DISABLE_EXCEPTION_CATCHING=0 -Oz -s EXPORTED_FUNCTIONS='["_cardScan", "_cardDetect"]' -s EXPORTED_RUNTIME_METHODS='["cwrap"]' -gsource-map --source-map-base http://localhost:8000/`

And generated source map is following.

`{"version":3,"sources":["../../../../../../../b/s/w/ir/k/install/emscripten/cache/sysroot/include/c++/v1/stdexcept","../../../../../../../b/s/w/ir/k/install/emscripten/cache/sysroot/include/c++/v1/string","../../../../../../../b/s/w/ir/k/install/emscripten/cache/sysroot/include/c++/v1/locale","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/pthread/library_pthread_stub.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stat/fstat.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/fcntl/open.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fgets.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fopen.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fmemopen.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/vsscanf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/sscanf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/ofl_add.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/vfscanf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/ferror.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/sprintf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fputc.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/remove.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/ofl.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fseek.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fclose.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__fmodeflags.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__toread.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fread.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fflush.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/fscanf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/rewind.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__string_read.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/stdout.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__stdio_read.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__stdio_seek.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/vsprintf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/tmpfile.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/putchar.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/vsnprintf.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__stdio_write.c","../../../../../../../b/s/w/ir/k/install/emscripten/system/lib/libc/musl/src/stdio/__uflow.c",
...... .......... ............. .......... ..........
AADQ,AAAH,MAAG,UACR,KAAF,cAMI,QAAV,UACQ,aACA,QACT,IAGA,GACmB,OAKV,IAHR,UACI,2BAEG,SAAgB,KAAvB,EC9BD,CAES,AADG,IACH,IADG,OACH,KAAuB,IAA/B,ECUD,YAGC,OACM,AAAU,QAAV,QAEN,SAID,YAGC,OACM,AAAiB,QAAjB,QAEN,SC7BD,GAEC,gBAC2B,AAD3B,AACM,OADN,KAC8B,uDAE9B,EEED,SAKqB,OAAmB,UAAT,cAA9B,WAC2B,8BAA3B,SAGA,OAAO,SAAK,SAAZ,MAJsC,KAMvC"}`

So below error message appears when click source in browser.

`Could not load content for http://localhost:8000/b/s/w/ir/k/install/emscripten/cache/sysroot/include/math.h (HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE)`

Operating System is "Ubuntu 20.04", emcc version is 2.0.25, clang version is 13.0.0.

I don't have any idea why source map contains path like `"../../../../../../../b/s/w/ir/k/"`.
Did I miss any environment variable or compile flag for source map generating?