Column not found

I have three tables namely: posts, category, and tags respectively. and also created pivot table with their relationships as follows:

Posts migration:

Schema::create('posts', function (Blueprint $table) {
            $table->id();
            $table->string('title');
            $table->string('subtitle');
            $table->string('slug');
            $table->text('body');
            $table->boolean('status')->default(1);
            $table->integer('posted_by')->nullable();
            $table->string('image')->nullable();
            $table->timestamps();
        });

blog category migration:

Schema::create('blog_categories', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->string('slug');
            $table->timestamps();
        });

blog tags migration:

Schema::create('blog_tags', function (Blueprint $table) {
            $table->id();
            $table->string('name');
            $table->string('slug');
            $table->timestamps();
        });

blog category_posts migration (pivot):

Schema::create('blogcategory_posts', function (Blueprint $table) {
            $table->unsignedBigInteger('post_id')->index();
            $table->unsignedBigInteger('category_id')->index();
            $table->foreign('post_id')->references('id')->on('posts')->onDelete('cascade');
            $table->timestamps();
        });

blog tag_posts migration (pivot):

Schema::create('blogpost_tags', function (Blueprint $table) {
            $table->unsignedBigInteger('post_id')->index();
            $table->unsignedBigInteger('tag_id')->index();
            $table->foreign('post_id')->references('id')->on('posts')->onDelete('cascade');
            $table->timestamps();
        });

posts model :

class posts extends Model
{
    use HasFactory;

    public function tags()
    {
        return $this->belongsToMany(blogTag::class, 'blogpost_tags')->withTimestamps();
    }

    public function categories()
    {
        return $this->belongsToMany(blogCategory::class, 'blogcategory_posts')->withTimestamps();
    }

    public function getRouteKeyName()
    {
        return 'slug';
    }
}

blogtag model:

class blogTag extends Model
{
    use HasFactory;

    public function posts()
    {
        return $this->belongsToMany(posts::class, 'blogpost_tags');
    }
}

blogcategory model:

class blogCategory extends Model
{
    use HasFactory;

    protected $fillable = ['name','slug'];

    public function posts()
    {
        return $this->belongsToMany(posts::class, 'blogcategory_posts');
    }
}

blogcontroller file:

public function insertBlog(Request $request){
        $imageName = '';
        if ($request->hasFile('image')) {
            $imageName = $request->image->store('public');
        }
        $post = new posts();
        $post->title = $request->title;
        $post->image = $imageName;
        $post->subtitle = $request->subtitle;
        $post->slug = $request->slug;
        $post->body = $request->body;
        $post->status = $request->status;
        $post->save();
        $post->tags()->sync($request->tags);
        $post->categories()->sync($request->categories);
        return redirect()->route('admin.blog.listBlog')->with('success', 'Post created successfully.');
    }

i m getting error on $post->tags()->sync($request->tags); line as

Column not found: 1054 Unknown column 'blogpost_tags.posts_id' in 'where clause' (SQL: select * from `blogpost_tags` where `blogpost_tags`.`posts_id` = 9)

as i have mentioned post_id but getting as posts_id help me out if i m not getting any solution related to this scenario.