'NoneType' object has no attribute 'step_into' with Python 3 support

Trying out v2-integration to get python 3 support, I can get the debugger to run and break, but as soon as I try to step, I get

'NoneType' object has no attribute 'step_into'

More details:

Vdebug will wait for a connection in the background Found connection, starting debugger Debugging session has ended Vdebug will wait for a connection in the background An error occured: <class ‘AttributeError’>^@Traceback (most recent call last):^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 524, in dispatch_event^@ Dispatcher.eventsname.run(*args)^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 331, in run^@ res = self.api.step_into()^@AttributeError: ‘NoneType’ object has no attribute ‘step_into’

It’s also interesting to note that when the debugger starts and the debuggerwatcher opens, it says Status: listening Listening on: 9000 Not connected

I don’t have a working setup with older versions anymore, but I don’t think it should say “Not connected” once those splits open up?

[letharion]

@BlackIkeEagle Today I started fresh with a new clone of vdebug, switched to v2-integration, and copied the plugin directory into my ~/.vim, I’m on e37e43509778d167af139b9879d329fdb944abbc

I have a PHP-based API, running under apache. I hit F10, get visual confirmation on breakpoint, F5, and get Vdebug will wait for a connection in the background. When curl hits the API, initially, nothing happens. The request doesn’t finish, but neither does vim appear to react. When I hit F5 again, I get “Found connection, starting debugger Debugging session has ended Vdebug will wait for a connection in the background” The 4 splits open up though, so it looks like I’m in the debugger.

Status is now “listening”, and I get a “Vdebug will wait for a connection in the background” message. The next curl request is patiently waiting for a response, so it appears a connection has been established. Trying F2, I now get

“An error occured: <class ‘AttributeError’>^@Traceback (most recent call last):^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 524, in dispatch_event^@ Dispatcher.events[name](self.__session_han dler).run(*args)^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 322, in run^@ res = self.api.step_over()^@AttributeError: ‘NoneType’ object has no attribute ‘step_over’ Found connection, starting debugger Debugging session has ended Vdebug will wait for a connection in the background”

The next curl request finishes right away, so I send another one, which ends up waiting. Trying F4 now, I get

“An error occured: <class ‘AttributeError’>^@Traceback (most recent call last):^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 524, in dispatch_event^@ Dispatcher.events[name](self.__session_han dler).run(*args)^@ File “/home/letharion/.vim/pythonx/vdebug/event.py”, line 340, in run^@ res = self.api.step_out()^@AttributeError: ‘NoneType’ object has no attribute ‘step_out’ Found connection, starting debugger Debugging session has ended Vdebug will wait for a connection in the background”

So I think the same issue is still present in the latest version of v2-integration.

[jimafisk]

It doesn’t work consistently for me, but when it does work these are the steps:

1. Set the breakpoint with <kbd>F10</kbd> then start the debugger with <kbd>F5</kbd>
2. Go to the browser and refresh the page (this will finish and not continue refreshing)
3. Go back to the editor and see that the debugger windows have popped up but the DebuggerStatus says “Not connected”
4. Press <kbd>F7</kbd> to detach (the 'NoneType' object has no attribute 'detach' errors will appear)
5. Press any key to continue and Found connection, starting debugger message appears
6. Press any key again and then you can continue with a normal debugging session (note your browser will not still be reloading)

Also possibly related: https://github.com/vim-vdebug/vdebug/issues/90