We are using the NuSoap module to connect to the WDSL server. we are getting the below error. Uncaught Error: Call to a member function setCredentials() on null function initSoap() { $this->client = new nusoap_client($this->wsdl_location, true); $this->client->setCredentials($this->username,$this->password, 'basic'); $err = $this->client->getError(); if ($err) { echo "Constructor Error: $err\n"; echo $this->client->debug_str . "\n"; return false; } $this->lmapi = $this->client->getProxy(); $this->lmapi->setCredentials($this->username,$this->password,...