vscodeのintelliSenceが表示が変

visual studio code の intelliSence が急に表示されなくなりました．
coutと打ってもcountなど違う候補が表示されます．
どうすれば補完候補を正しくできるのでしょうか？
vscodeの設定は以下の通りです．
回答よろしくお願いします．

c_cpp_properties.json

json
1{
2    "configurations": [
3        {
4            "name": "Mac",
5            "includePath": [
6                "${workspaceFolder}/**",
7                "/usr/local/include/**"
8            ],
9            "defines": [],
10            "macFrameworkPath": [
11                "/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/System/Library/Frameworks"
12            ],
13            "compilerPath": "/usr/local/bin/g++",
14            "cStandard": "c11",
15            "cppStandard": "c++17",
16            "intelliSenseMode": "gcc-x64"
17        }
18    ],
19    "version": 4
20}

launch.json

json
1{
2    "version": "0.2.0",
3    "configurations": [
4        {
5            "name": "(lldb) Launch",
6            "type": "lldb",
7            "request": "launch",
8            "program": "${fileDirname}/${fileBasenameNoExtension}.out",
9            "args": [],
10            "cwd": "${workspaceFolder}",
11        }
12    ]
13}

settings.json

json
1{
2    "files.associations": {
3        "iostream": "cpp",
4        "array": "cpp",
5        "string": "cpp",
6        "string_view": "cpp",
7        "ostream": "cpp",
8        "chrono": "cpp",
9        "random": "cpp",
10        "limits": "cpp",
11        "valarray": "cpp",
12        "vector": "cpp",
13        "tuple": "cpp",
14        "*.tcc": "cpp",
15        "forward_list": "cpp",
16        "unordered_map": "cpp",
17        "unordered_set": "cpp",
18        "memory": "cpp",
19        "optional": "cpp",
20        "fstream": "cpp",
21        "future": "cpp",
22        "istream": "cpp",
23        "shared_mutex": "cpp",
24        "sstream": "cpp",
25        "streambuf": "cpp",
26        "thread": "cpp",
27        "functional": "cpp",
28        "regex": "cpp",
29        "deque": "cpp",
30        "atomic": "cpp",
31        "bitset": "cpp",
32        "cctype": "cpp",
33        "cfenv": "cpp",
34        "charconv": "cpp",
35        "cinttypes": "cpp",
36        "clocale": "cpp",
37        "cmath": "cpp",
38        "codecvt": "cpp",
39        "complex": "cpp",
40        "condition_variable": "cpp",
41        "csetjmp": "cpp",
42        "csignal": "cpp",
43        "cstdarg": "cpp",
44        "cstddef": "cpp",
45        "cstdint": "cpp",
46        "cstdio": "cpp",
47        "cstdlib": "cpp",
48        "cstring": "cpp",
49        "ctime": "cpp",
50        "cuchar": "cpp",
51        "cwchar": "cpp",
52        "cwctype": "cpp",
53        "list": "cpp",
54        "exception": "cpp",
55        "algorithm": "cpp",
56        "iterator": "cpp",
57        "map": "cpp",
58        "memory_resource": "cpp",
59        "numeric": "cpp",
60        "ratio": "cpp",
61        "set": "cpp",
62        "system_error": "cpp",
63        "type_traits": "cpp",
64        "utility": "cpp",
65        "initializer_list": "cpp",
66        "iomanip": "cpp",
67        "iosfwd": "cpp",
68        "mutex": "cpp",
69        "new": "cpp",
70        "scoped_allocator": "cpp",
71        "stdexcept": "cpp",
72        "typeindex": "cpp",
73        "typeinfo": "cpp"
74    },
75    "C_Cpp.errorSquiggles": "Disabled",
76
77    "code-runner.executorMap":{
78        "cpp": "cd $dir && g++ -std=c++17 $fileName -o $fileNameWithoutExt && $dir$fileNameWithoutExt",
79    },
80}

tasks.json

json
1{
2    "version": "2.0.0",
3    "tasks": [
4        {
5            "label": "Build with gcc",
6            "type": "shell",
7            "command": "g++",
8            "args": [
9                "-std=c++17",
10                "-g",
11                "${file}",
12                "-o",
13                "${fileDirname}/${fileBasenameNoExtension}.out",
14                "--debug"
15            ],
16            "group": {
17                "kind": "build",
18                "isDefault": true
19            }
20        }
21    ]
22}