Attempted to Dereference An Invalid ObjC Object

[danielchangsoojones]

I am trying to run the fa11y command, but I get this error. I can't seem to figure it out or find any resources to fix this. Here is the complete error:

(lldb) fa11y C
error: error: Execution was interrupted, reason: Attempted to dereference an invalid ObjC Object or send it an unrecognized selector.
The process has been returned to the state before expression evaluation.
error: error: use of undeclared identifier 'None'
Traceback (most recent call last):
File "/usr/local/opt/chisel/libexec/fblldb.py", line 83, in runCommand
command.run(args, options)
File "/usr/local/Cellar/chisel/1.7.1/libexec/commands/FBAccessibilityCommands.py", line 89, in run
self.accessibilityGrepHierarchy(rootView, arguments[0])
File "/usr/local/Cellar/chisel/1.7.1/libexec/commands/FBAccessibilityCommands.py", line 71, in accessibilityGrepHierarchy
accessibilityElementsCount = fb.evaluateIntegerExpression('[%s count]' % accessibilityElements)
File "/usr/local/opt/chisel/libexec/fblldbbase.py", line 88, in evaluateIntegerExpression
output = evaluateExpression('(int)(' + expression + ')', printErrors).replace(''', '')
AttributeError: 'NoneType' object has no attribute 'replace'

[kastiglione]

thanks I'll look into this

[kastiglione]

It looks like a private method used by fa11y and pa11y is no longer present. _accessibilityElementsInContainer:topLevel:includeKB:

[kastiglione]

cc @bartoszj who had previously contributed to these commands.