Add troubleshooting tip. (#109)

* Add troubleshooting tip.

* Update from-gogs.en-us.md

* Reinstate troubleshooting section

* Update from-gogs.en-us.md

* Update from-gogs.en-us.md

* Update from-gogs.en-us.md

Author: sbrl

content/doc/upgrade/from-gogs.en-us.md

@@ -20,16 +20,15 @@ Gogs versions up to 0.9.115 can be smootlhy upgraded to Gitea.
 There are some steps to do so below. On Unix run as your Gogs user:
 
 * Create a Gogs backup with `gogs dump`. This creates `gogs-dump-[timestamp].zip` file containing all your Gogs data. 
-* Download the file matching your platform from the [downloads page](https://dl.gitea.io/gitea)
-* Put the binary at the desired install location
-* Copy `gogs/custom/conf/app.ini` to `gitea/custom/conf/app.ini`
+* Download the file matching your platform from the [downloads page](https://dl.gitea.io/gitea).
+* Put the binary at the desired install location.
+* Copy `gogs/custom/conf/app.ini` to `gitea/custom/conf/app.ini`.
 * If you have custom `templates, public` in `gogs/custom/` copy them to `gitea/custom/`.
 * If you have any other custom folders like `gitignore, label, license, locale, readme` in `gogs/custom/conf` copy them to `gitea/custom/options`.
 * Copy `gogs/data/` to `gitea/data/`. It contains issue attachments and avatars.
-* Verify by starting Gitea with `gitea web`
+* Verify by starting Gitea with `gitea web`.
 * Enter Gitea admin panel on the UI, run `Rewrite '.ssh/authorized_keys' file`, then run `Rewrite all update hook of repositories` (needed when custom config path is changed).
-  
-  
+
 ### Change gogs specific information:
 
 * Rename `gogs-repositories/` to `gitea-repositories/`
@@ -61,10 +60,14 @@ ROOT_PATH = /home/:USER/gitea/log
 ```
 
 * Verify by starting Gitea with `gitea web`
-  
-  
+
+### Troubleshooting
+
+* If you encounter errors relating to custom templates in the `gitea/custom/templates` folder, try moving the templates causing the errors away one by one. They may not be compatible with Gitea.
+
 ### Add Gitea to startup on Unix
-Update the appropriate file from [gitea/contrib](https://github.com/go-gitea/gitea/tree/master/contrib) with the right environment variables.
+
+Update the appropriate file from [gitea/scripts](https://github.com/go-gitea/gitea/tree/master/scripts) with the right environment variables.
 
 For distro's with systemd: