diff --git a/sourcemap-uploader/cli.js b/sourcemap-uploader/cli.js
index f7b124117..c644369f3 100755
--- a/sourcemap-uploader/cli.js
+++ b/sourcemap-uploader/cli.js
@@ -18,10 +18,13 @@ parser.addArgument(['-p', '-i', '--project-key'], { // -i is depricated
   help: 'Project Key',
   required: true,
 });
-
 parser.addArgument(['-s', '--server'], {
   help: 'OpenReplay API server URL for upload',
 });
+parser.addArgument(['-l', '--log'], {
+  help: 'Log requests information',
+  action: 'storeTrue',
+});
 
 const subparsers = parser.addSubparsers({
   title: 'commands',
@@ -50,7 +53,9 @@ dir.addArgument(['-u', '--js-dir-url'], {
 
 // TODO: exclude in dir
 
-const { command, api_key, project_key, server, ...args } = parser.parseArgs();
+const { command, api_key, project_key, server, log, ...args } = parser.parseArgs();
+
+global.LOG = !!log;
 
 try {
   global.SERVER = new URL(server || "https://api.openreplay.com");
diff --git a/sourcemap-uploader/lib/readDir.js b/sourcemap-uploader/lib/readDir.js
index 56a51a72b..501a2949f 100644
--- a/sourcemap-uploader/lib/readDir.js
+++ b/sourcemap-uploader/lib/readDir.js
@@ -3,7 +3,9 @@ const readFile = require('./readFile');
 
 module.exports = (sourcemap_dir_path, js_dir_url) => {
   sourcemap_dir_path = (sourcemap_dir_path + '/').replace(/\/+/g, '/');
-  js_dir_url = (js_dir_url + '/').replace(/\/+/g, '/');
+  if (js_dir_url[ js_dir_url.length - 1 ] !== '/') { // replace will break schema
+    js_dir_url += '/';
+  }
   return glob(sourcemap_dir_path + '**/*.map').then(sourcemap_file_paths =>
     Promise.all(
       sourcemap_file_paths.map(sourcemap_file_path =>
diff --git a/sourcemap-uploader/lib/uploadSourcemaps.js b/sourcemap-uploader/lib/uploadSourcemaps.js
index a39ce5e4d..f0c3171fd 100644
--- a/sourcemap-uploader/lib/uploadSourcemaps.js
+++ b/sourcemap-uploader/lib/uploadSourcemaps.js
@@ -7,14 +7,21 @@ const getUploadURLs = (api_key, project_key, js_file_urls) =>
     }
 
     const pathPrefix = (global.SERVER.pathname + "/").replace(/\/+/g, '/');
+    const options = {
+      method: 'PUT',
+      hostname: global.SERVER.host,
+      path: pathPrefix + `${project_key}/sourcemaps/`,
+      headers: { Authorization: api_key, 'Content-Type': 'application/json' },
+    }
+    if (global.LOG) {
+      console.log("Request: ", options, "\nFiles: ", js_file_urls);
+    }
     const req = https.request(
-      {
-        method: 'PUT',
-        hostname: global.SERVER.host,
-        path: pathPrefix + `${project_key}/sourcemaps/`,
-        headers: { Authorization: api_key, 'Content-Type': 'application/json' },
-      },
+      options,
       res => {
+        if (global.LOG) {
+          console.log("Response Code: ", res.statusCode, "\nMessage: ", res.statusMessage);
+        }
         if (res.statusCode === 403) {
           reject("Authorisation rejected. Please, check your API_KEY and/or PROJECT_KEY.")
           return
@@ -24,7 +31,12 @@ const getUploadURLs = (api_key, project_key, js_file_urls) =>
         }
         let data = '';
         res.on('data', s => (data += s));
-        res.on('end', () => resolve(JSON.parse(data).data));
+        res.on('end', () => {
+          if (global.LOG) {
+            console.log("Server Response: ", data)
+          }
+          resolve(JSON.parse(data).data)
+        });
       },
     );
     req.on('error', reject);
@@ -46,8 +58,12 @@ const uploadSourcemap = (upload_url, body) =>
       },
       res => {
         if (res.statusCode !== 200) {
+          if (global.LOG) {
+            console.log("Response Code: ", res.statusCode, "\nMessage: ", res.statusMessage);
+          }
+
           reject("Unable to upload. Please, contact OpenReplay support.");
-          return;
+          return;  // TODO: report per-file errors.
         }
         resolve();
         //res.on('end', resolve);
diff --git a/sourcemap-uploader/package.json b/sourcemap-uploader/package.json
index 2ffe6f5b7..8f0070408 100644
--- a/sourcemap-uploader/package.json
+++ b/sourcemap-uploader/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@openreplay/sourcemap-uploader",
-  "version": "3.0.1",
+  "version": "3.0.2",
   "description": "NPM module to upload your JS sourcemaps files to OpenReplay",
   "bin": "cli.js",
   "main": "index.js",