Update install/test server docs and add new known RPC error

readthedocs/basic/installation.rst

@@ -6,14 +6,16 @@ Installation
 
 Telethon is a Python library, which means you need to download and install
 Python from https://www.python.org/downloads/ if you haven't already. Once
-you have Python installed, run:
+you have Python installed, `upgrade pip`__ and run:
 
 .. code-block:: sh
 
-    pip3 install -U telethon --user
+    python3 -m pip install --upgrade pip
+    python3 -m pip install --upgrade telethon
 
-To install or upgrade the library to the latest version.
+…to install or upgrade the library to the latest version.
 
+.. __: https://pythonspeed.com/articles/upgrade-pip/
 
 Installing Development Versions
 ===============================
@@ -23,7 +25,7 @@ you can run the following command instead:
 
 .. code-block:: sh
 
-    pip3 install -U https://github.com/LonamiWebs/Telethon/archive/master.zip --user
+    python3 -m pip install --upgrade https://github.com/LonamiWebs/Telethon/archive/master.zip
 
 .. note::
 
@@ -74,7 +76,7 @@ manually.
 
     Some of the modules may require additional dependencies before being
     installed through ``pip``. If you have an ``apt``-based system, consider
-    installing the most commonly missing dependencies:
+    installing the most commonly missing dependencies (with the right ``pip``):
 
     .. code-block:: sh
 
@@ -85,6 +87,7 @@ manually.
 
     Thanks to `@bb010g`_ for writing down this nice list.
 
+
 .. _cryptg: https://github.com/cher-nov/cryptg
 .. _pyaes: https://github.com/ricmoo/pyaes
 .. _pillow: https://python-pillow.org

readthedocs/developing/test-servers.rst

@@ -25,13 +25,13 @@ so don't store sensitive data here.
 
 Valid phone numbers are ``99966XYYYY``, where ``X`` is the ``dc_id`` and
 ``YYYY`` is any number you want, for example, ``1234`` in ``dc_id = 2`` would
-be ``9996621234``. The code sent by Telegram will be ``dc_id`` repeated five
-times, in this case, ``22222`` so we can hardcode that:
+be ``9996621234``. The code sent by Telegram will be ``dc_id`` repeated six
+times, in this case, ``222222`` so we can hardcode that:
 
 .. code-block:: python
 
     client = TelegramClient(None, api_id, api_hash)
     client.session.set_dc(2, '149.154.167.40', 80)
     client.start(
-        phone='9996621234', code_callback=lambda: '22222'
+        phone='9996621234', code_callback=lambda: '222222'
     )

telethon_generator/data/errors.csv

@@ -362,6 +362,7 @@ VIDEO_CONTENT_TYPE_INVALID,400,The video content type is not supported with the
 VIDEO_FILE_INVALID,400,The given video cannot be used
 WALLPAPER_FILE_INVALID,400,The given file cannot be used as a wallpaper
 WALLPAPER_INVALID,400,The input wallpaper was not valid
+WALLPAPER_MIME_INVALID,400,
 WC_CONVERT_URL_INVALID,400,WC convert URL invalid
 WEBDOCUMENT_URL_INVALID,400,The given URL cannot be used
 WEBPAGE_CURL_FAILED,400,Failure while fetching the webpage with cURL

telethon_generator/data/methods.csv

@@ -62,7 +62,7 @@ account.updateStatus,user,SESSION_PASSWORD_NEEDED
 account.updateTheme,user,THEME_INVALID
 account.updateUsername,user,USERNAME_INVALID USERNAME_NOT_MODIFIED USERNAME_OCCUPIED
 account.uploadTheme,user,
-account.uploadWallPaper,user,WALLPAPER_FILE_INVALID
+account.uploadWallPaper,user,WALLPAPER_FILE_INVALID WALLPAPER_MIME_INVALID
 account.verifyEmail,user,EMAIL_INVALID
 account.verifyPhone,user,
 auth.acceptLoginToken,user,