ErrorException Array to string conversion Laravel - Importing JSON to MySQL

I try to import JSON formatted file into MySQL database. I put this code in the web.php:

Route::get('/pages', function(){
    $json = file_get_contents(storage_path('posts_and_comments.json'));
    $objs = json_decode($json,true);
    foreach ($objs as $obj)  {
        foreach ($obj as $key => $value) {
            $insertArr[Str::slug($key,'_')] = $value;
        }
        DB::table('my_likes')->insert($insertArr);
    }
    dd("Finished adding data in examples table");
});

It gave me a ErrorException Array to string conversion Laravel. How can I solve it? Thanks!

Answer

Can you try encoding array as a json object than insert it to db ?

foreach ($objs as $obj)  {
    foreach ($obj as $key => $value) {
        $insertArr[Str::slug($key,'_')] = json_encode($value);
    }
    DB::table('my_likes')->insert($insertArr);
}