In file included from ../src/bufferutil.cc:17:
../../../nan/nan.h: In function ‘void Nan::AsyncQueueWorker(Nan::AsyncWorker*)’:
../../../nan/nan.h:2298:62: warning: cast between incompatible function types from ‘void (*)(uv_work_t*)’ {aka ‘void (*)(uv_work_s*)’} to ‘uv_after_work_cb’ {aka ‘void (*)(uv_work_s*, int)’} [-Wcast-function-type]
 2298 |     , reinterpret_cast<uv_after_work_cb>(AsyncExecuteComplete)
      |                                                              ^
../src/bufferutil.cc: In static member function ‘static void BufferUtil::Initialize(v8::Local<v8::Object>)’:
../src/bufferutil.cc:34:86: error: no matching function for call to ‘v8::FunctionTemplate::GetFunction()’
   34 |     Nan::Set(target, Nan::New<String>("BufferUtil").ToLocalChecked(), t->GetFunction());
      |                                                                                      ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:6482:46: note: candidate: ‘v8::MaybeLocal<v8::Function> v8::FunctionTemplate::GetFunction(v8::Local<v8::Context>)’
 6482 |   V8_WARN_UNUSED_RESULT MaybeLocal<Function> GetFunction(
      |                                              ^~~~~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:6482:46: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE BufferUtil::Merge(Nan::NAN_METHOD_ARGS_TYPE)’:
../src/bufferutil.cc:50:49: error: no matching function for call to ‘v8::Value::ToObject()’
   50 |     Local<Object> bufferObj = info[0]->ToObject();
      |                                                 ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:57:39: error: no matching function for call to ‘v8::Array::Get(unsigned int&)’
   57 |       Local<Object> src = array->Get(i)->ToObject();
      |                                       ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:3717:43: note: candidate: ‘v8::MaybeLocal<v8::Value> v8::Object::Get(v8::Local<v8::Context>, v8::Local<v8::Value>)’
 3717 |   V8_WARN_UNUSED_RESULT MaybeLocal<Value> Get(Local<Context> context,
      |                                           ^~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:3717:43: note:   candidate expects 2 arguments, 1 provided
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:3720:43: note: candidate: ‘v8::MaybeLocal<v8::Value> v8::Object::Get(v8::Local<v8::Context>, uint32_t)’
 3720 |   V8_WARN_UNUSED_RESULT MaybeLocal<Value> Get(Local<Context> context,
      |                                           ^~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:3720:43: note:   candidate expects 2 arguments, 1 provided
../src/bufferutil.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE BufferUtil::Unmask(Nan::NAN_METHOD_ARGS_TYPE)’:
../src/bufferutil.cc:68:50: error: no matching function for call to ‘v8::Value::ToObject()’
   68 |     Local<Object> buffer_obj = info[0]->ToObject();
      |                                                  ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:70:48: error: no matching function for call to ‘v8::Value::ToObject()’
   70 |     Local<Object> mask_obj = info[1]->ToObject();
      |                                                ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE BufferUtil::Mask(Nan::NAN_METHOD_ARGS_TYPE)’:
../src/bufferutil.cc:89:50: error: no matching function for call to ‘v8::Value::ToObject()’
   89 |     Local<Object> buffer_obj = info[0]->ToObject();
      |                                                  ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:90:48: error: no matching function for call to ‘v8::Value::ToObject()’
   90 |     Local<Object> mask_obj = info[1]->ToObject();
      |                                                ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:92:50: error: no matching function for call to ‘v8::Value::ToObject()’
   92 |     Local<Object> output_obj = info[2]->ToObject();
      |                                                  ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note: candidate: ‘v8::MaybeLocal<v8::Object> v8::Value::ToObject(v8::Local<v8::Context>) const’
 2822 |   V8_WARN_UNUSED_RESULT MaybeLocal<Object> ToObject(
      |                                            ^~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2822:44: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:93:51: error: no matching function for call to ‘v8::Value::Int32Value()’
   93 |     unsigned int dataOffset = info[3]->Int32Value();
      |                                                   ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2869:40: note: candidate: ‘v8::Maybe<int> v8::Value::Int32Value(v8::Local<v8::Context>) const’
 2869 |   V8_WARN_UNUSED_RESULT Maybe<int32_t> Int32Value(Local<Context> context) const;
      |                                        ^~~~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2869:40: note:   candidate expects 1 argument, 0 provided
../src/bufferutil.cc:94:47: error: no matching function for call to ‘v8::Value::Int32Value()’
   94 |     unsigned int length = info[4]->Int32Value();
      |                                               ^
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2869:40: note: candidate: ‘v8::Maybe<int> v8::Value::Int32Value(v8::Local<v8::Context>) const’
 2869 |   V8_WARN_UNUSED_RESULT Maybe<int32_t> Int32Value(Local<Context> context) const;
      |                                        ^~~~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:2869:40: note:   candidate expects 1 argument, 0 provided
In file included from ../src/bufferutil.cc:9:
../src/bufferutil.cc: At global scope:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/node.h:758:43: warning: cast between incompatible function types from ‘void (*)(v8::Local<v8::Object>)’ to ‘node::addon_register_func’ {aka ‘void (*)(v8::Local<v8::Object>, v8::Local<v8::Value>, void*)’} [-Wcast-function-type]
  758 |       (node::addon_register_func) (regfunc),                          \
      |                                           ^
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/node.h:792:3: note: in expansion of macro ‘NODE_MODULE_X’
  792 |   NODE_MODULE_X(modname, regfunc, NULL, 0)  // NOLINT (readability/null_usage)
      |   ^~~~~~~~~~~~~
../src/bufferutil.cc:121:1: note: in expansion of macro ‘NODE_MODULE’
  121 | NODE_MODULE(bufferutil, init)
      | ^~~~~~~~~~~
In file included from ../src/bufferutil.cc:8:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h: In instantiation of ‘void v8::PersistentBase<T>::SetWeak(P*, typename v8::WeakCallbackInfo<P>::Callback, v8::WeakCallbackType) [with P = node::ObjectWrap; T = v8::Object; typename v8::WeakCallbackInfo<P>::Callback = void (*)(const v8::WeakCallbackInfo<node::ObjectWrap>&)]’:
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/node_object_wrap.h:85:78:   required from here
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:10874:16: warning: cast between incompatible function types from ‘v8::WeakCallbackInfo<node::ObjectWrap>::Callback’ {aka ‘void (*)(const v8::WeakCallbackInfo<node::ObjectWrap>&)’} to ‘Callback’ {aka ‘void (*)(const v8::WeakCallbackInfo<void>&)’} [-Wcast-function-type]
10874 |                reinterpret_cast<Callback>(callback), type);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h: In instantiation of ‘void v8::PersistentBase<T>::SetWeak(P*, typename v8::WeakCallbackInfo<P>::Callback, v8::WeakCallbackType) [with P = Nan::ObjectWrap; T = v8::Object; typename v8::WeakCallbackInfo<P>::Callback = void (*)(const v8::WeakCallbackInfo<Nan::ObjectWrap>&)]’:
../../../nan/nan_object_wrap.h:65:61:   required from here
/home/ubuntu/.cache/node-gyp/14.17.5/include/node/v8.h:10874:16: warning: cast between incompatible function types from ‘v8::WeakCallbackInfo<Nan::ObjectWrap>::Callback’ {aka ‘void (*)(const v8::WeakCallbackInfo<Nan::ObjectWrap>&)’} to ‘Callback’ {aka ‘void (*)(const v8::WeakCallbackInfo<void>&)’} [-Wcast-function-type]
../src/bufferutil.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE BufferUtil::Mask(Nan::NAN_METHOD_ARGS_TYPE)’:
../src/bufferutil.cc:103:39: warning: this statement may fall through [-Wimplicit-fallthrough=]
  103 |       case 3: *((unsigned char*)to+2) = *((unsigned char*)from+2) ^ *((unsigned char*)mask+2);
      |               ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/bufferutil.cc:104:7: note: here
  104 |       case 2: *((unsigned char*)to+1) = *((unsigned char*)from+1) ^ *((unsigned char*)mask+1);
      |       ^~~~
../src/bufferutil.cc:104:39: warning: this statement may fall through [-Wimplicit-fallthrough=]
  104 |       case 2: *((unsigned char*)to+1) = *((unsigned char*)from+1) ^ *((unsigned char*)mask+1);
      |               ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/bufferutil.cc:105:7: note: here
  105 |       case 1: *((unsigned char*)to  ) = *((unsigned char*)from  ) ^ *((unsigned char*)mask);
      |       ^~~~
../src/bufferutil.cc: In static member function ‘static Nan::NAN_METHOD_RETURN_TYPE BufferUtil::Unmask(Nan::NAN_METHOD_ARGS_TYPE)’:
../src/bufferutil.cc:78:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
   78 |       case 3: *((unsigned char*)from+2) = *((unsigned char*)from+2) ^ ((unsigned char*)mask)[2];
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/bufferutil.cc:79:7: note: here
   79 |       case 2: *((unsigned char*)from+1) = *((unsigned char*)from+1) ^ ((unsigned char*)mask)[1];
      |       ^~~~
../src/bufferutil.cc:79:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
   79 |       case 2: *((unsigned char*)from+1) = *((unsigned char*)from+1) ^ ((unsigned char*)mask)[1];
      |               ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../src/bufferutil.cc:80:7: note: here
   80 |       case 1: *((unsigned char*)from  ) = *((unsigned char*)from  ) ^ ((unsigned char*)mask)[0];
      |       ^~~~
make: *** [bufferutil.target.mk:112: Release/obj.target/bufferutil/src/bufferutil.o] Error 1
gyp ERR! build error 
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:194:23)
gyp ERR! stack     at ChildProcess.emit (events.js:400:28)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:277:12)
gyp ERR! System Linux 5.4.0-81-generic
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
gyp ERR! cwd /home/ubuntu/send-token/node_modules/@web3-js/websocket
gyp ERR! node -v v14.17.5
gyp ERR! node-gyp -v v5.1.0
gyp ERR! not ok