Play cannot start with "TypeError: stat() argument 1 must be (encoded string without NULL bytes), not str"

I suddenly come into the trouble that I cannot start play on my project. Here is the error message:

Traceback (most recent call last):
  File "j:\play\play", line 143, in <module>
    cmdloader.load_play_module(module)
  File "j:\play\framework\pym\play\cmdloader.py", line 31, in load_play_module
    if os.path.exists(commands):
  File "j:\play\python\lib\genericpath.py", line 18, in exists
    st = os.stat(path)
TypeError: stat() argument 1 must be (encoded string without NULL bytes), not str

I tried to do play clean but it got the same problem. I was very annoyed and even restart the machine, the same result!!!!
And when I come to other project it was all good. So I realized that something is run with this project instead of my system. I add a "print path" statement in the genericpath.py, and it prints out this sequences:

c:\w\_lgl\play-morphia
c:\w\_lgl\play-morphia\samples-and-tests\unit-tests\modules
j:\play\modules\crud\commands.py
K-*╬╠¤│R0È3ÓÕr,J╬╚,K-õñVö▬+└$x╣£ïR‼KRStØ*üz╠¶♀tô♀ì§4éK¾¶|3ôï‗ï+ïKRsï§<¾Æ§4y╣x╣ PK♥♦
     ♦ì⌂<                  META-INF/PK♥♦¶  K½~<♥        yR♠☻  T♠  -   net/sf/oval/collection/CollectionFactory.java┼S┴j▄0►=»┴ 0Ã$deoáùñöäðÊʶB↕z▼╦│Â↕Y2Æ╝ï)²¸Äõf‼¿│öÆÂ:YofÌ╝y#↨G»{‗♀ÄÓ┌║á¼± ↔aá\commands.py
Traceback (most recent call last):
  File "j:\play\play", line 143, in 
    cmdloader.load_play_module(module)
  File "j:\play\framework\pym\play\cmdloader.py", line 31, in load_play_module
    if os.path.exists(commands):
  File "j:\play\python\lib\genericpath.py", line 19, in exists
    st = os.stat(path)
TypeError: stat() argument 1 must be (encoded string without NULL bytes), not str

hmm... yes, I got it, it's the oval validation source in jar files I've downloaded into the modules folder when I was in intellij IDEA. That explains it. Getting rid of that jar file resolves the issue.

maven build error: unmappable character for encoding Cp1252

I've just encountered this strange error when I use maven to build my project:

[ERROR] c:\w\_lgl\rythm\src\main\java\com\greenlaw110\rythm\utils\S.java:[125,1279] unmappable character for encoding Cp1252

The solution is open the pom.xml file and add one line into the maven-compiler-plugin section:

 org.apache.maven.plugins
 maven-compiler-plugin
 2.0.2
 
  1.6
  1.6
  UTF-8 
 

[PlayMorphia]RuntimeException: bad type, not parameterized...

Just got this exception stack:

@68i05o17j
Internal Server Error (500) for request GET /@tests

Oops: RuntimeException
An unexpected error occured caused by exception RuntimeException: bad type, not parameterized...

play.exceptions.UnexpectedException: Unexpected Error
        at play.Play.start(Play.java:525)
        at play.Play.detectChanges(Play.java:610)
        at play.Invoker$Invocation.init(Invoker.java:186)
        at Invocation.HTTP Request(Play!)
Caused by: java.lang.RuntimeException: bad type, not parameterized...
        at com.google.code.morphia.utils.ReflectionUtils.isPropertyType(ReflectionUtils.java:194)
        at com.google.code.morphia.mapping.MappedField.discover(MappedField.java:102)
        at com.google.code.morphia.mapping.MappedField.(MappedField.java:78)
        at com.google.code.morphia.mapping.MappedClass.discover(MappedClass.java:166)
        at com.google.code.morphia.mapping.MappedClass.(MappedClass.java:110)
        at com.google.code.morphia.mapping.Mapper.getMappedClass(Mapper.java:200)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:319)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:280)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:341)
        at com.google.code.morphia.DatastoreImpl.ensureIndexes(DatastoreImpl.java:334)
        at play.modules.morphia.MorphiaPlugin.configureDs_(MorphiaPlugin.java:569)
        at play.modules.morphia.MorphiaPlugin.onApplicationStart(MorphiaPlugin.java:453)
        at play.plugins.PluginCollection.onApplicationStart(PluginCollection.java:425)
        at play.Play.start(Play.java:495)
        ... 3 more

The reason is I put a Blob type field inside an @Embedded class, which will not be enhanced at all. Taking that out of embedded class solves the issue

Fatal error connect to github

I suddenly found I cannot push/pull from github anymore, always get the error:

FATAL ERROR: Network error: Connection timed out
fatal: The remote end hung up unexpectedly

This happens after I've installed TortoiseGit on my laptop. However it doesn't help to remove that program from my computer. In the end I found there is an environment variable named "GIT_SSH" point to "C:\tools\PLINK.exe". After I changed it to "C:\apps\Git\bin\ssh.exe" the github connection come back.

[PlayMorphia] IllegalAccessError occured : tried to access method models.User.(Ljava/lang/String;)V from class models.User$Factory

Symptom: IllegalAccessError occured : tried to access method models.User.(Ljava/lang/String;)V from class models.User$Factory Cause: * PlayMorphia code enhancement changed the access level of the constructor some how. Background: I have a parent model class:

@Entity public class FBUser extends Model {
   ...
   public static connect() {
      ...
      return fact.create(); 
   }
   public static interface UserFactory {
      FBUser create(String userId);
   }
   @Inject
   public static UserFactory fact;
}

And then I created a sub class

@Entity public class User extends FBUser {
    protected User(String id) {...}
    public static class Factory implements IUserFactory {
        @Override
        public FBUser create(String id) {
            return new User(id);
        }
    }
}

The problem happens at line 6: return new User(id), it's a bit strange that although Factory is an another class, it's embedded inside User class and should have the access to the protected User(String) constructor. There is also not complaints from the compiler. Actually if I suppress the @Entity annotation from the User class (which actually suppress the code enhancement from PlayMorphia module) the error will not occur. So it looks to me that the code enhancement somehow break the embedded class accessible state. The solution is simple: make the protected constructor public. Reference: * http://www.playframework.org * http://www.playframework.org/modules/morphia

[GreenScript]Template not found : tags/greenscript/gs_.html or tags/greenscript/gs_.tag

Error Message:
Template not found (In /app/views/main.html around line 11)
The template tags/greenscript/gs_.html or tags/greenscript/gs_.tag does not exist.

Root Cause:
- GreenScript link in the modules folder point to a GreenScript module that does not exist

Fix:
1. Update conf/dependencies.yml
2. run play deps --sync