Add message to the error consistent with one in proxy.js (#5518)

Author: szegedi

packages/dd-trace/src/profiler.js

@@ -14,7 +14,7 @@ module.exports = {
       debug: (message) => log.debug(message),
       info: (message) => log.info(message),
       warn: (message) => log.warn(message),
-      error: (message) => log.error(message)
+      error: (...args) => log.error(...args)
     }
 
     const libraryInjected = injectionEnabled.length > 0

packages/dd-trace/src/profiling/profiler.js

@@ -18,9 +18,9 @@ function maybeSourceMap (sourceMap, SourceMapper, debug) {
   ], debug)
 }
 
-function logError (logger, err) {
+function logError (logger, ...args) {
   if (logger) {
-    logger.error(err)
+    logger.error(...args)
   }
 }
 
@@ -52,7 +52,8 @@ class Profiler extends EventEmitter {
 
   start (options) {
     return this._start(options).catch((err) => {
-      logError(options.logger, err)
+      logError(options.logger, 'Error starting profiler. For troubleshooting tips, see ' +
+        '<https://dtdg.co/nodejs-profiler-troubleshooting>', err)
       return false
     })
   }