[EXPORTER] Error when grpc endpoint is empty #9125

Job	Run time
CMake clang 15 (maintainer mode, abiv2)	14m 3s
CMake clang 15 (maintainer mode, async)	15m 3s
CMake clang 15 (maintainer mode, sync)	13m 44s
CMake gcc 13 (maintainer mode, async)	7m 25s
CMake gcc 13 (maintainer mode, sync)	6m 37s
CMake test (without otlp-exporter)	4m 57s
CMake test (with abseil)	4m 31s
CMake msvc (maintainer mode)	7m 46s
CMake msvc (maintainer mode) with C++20	8m 7s
CMake test (with opentracing-shim)	4m 31s
CMake C++14 test(GCC)	4m 24s
CMake C++17 test(GCC)	4m 44s
CMake test (without otlp-exporter and with async export)	4m 54s
CMake C++20 test(GCC)	8m 24s
CMake do not install test (with otlp-exporter)	13m 38s
CMake install test (with abseil)	4m 41s
CMake test (with modern protobuf,grpc and abseil)	18m 26s
CMake test (build shared libraries with otlp-exporter and static gRPC)	14m 25s
CMake test (with otlp-exporter)	13m 45s
CMake C++20 test(Clang with libc++)	9m 22s
CMake C++23 test(Clang with libc++)	10m 5s
CMake C++23 test(GCC)	8m 44s
Plugin -> CMake	1m 6s
Bazel asan config	14m 48s
Bazel noexcept	11m 40s
Bazel nortti	11m 50s
Bazel on MacOS	21m 29s
Bazel	12m 20s
Bazel with async export	12m 31s
Bazel tsan config	12m 49s
Bazel valgrind	13m 45s
Bazel with external abseil	12m 18s
Benchmark	7m 47s
Code coverage	12m 3s
Copyright	5s
Format	16s
DocFX check	48s
markdown-lint	7s
misspell	3s
CMake -> exporter proto	11m 58s
Bazel Windows	19m 37s
Plugin -> CMake Windows	6m 27s
CMake (With async export) -> exporter proto	11m 36s
CMake -> exporter proto (Build as DLL)	23m 10s
	7h 0m 49s

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