Error when running heat-equation.py example

[wearefor]

When running the fenics heat-equation.py example, I encounter the following error

Traceback (most recent call last):
File "heat-equation.py", line 45, in
(times, computed_states, u) = main(guess_ic, annotate=True)
File "heat-equation.py", line 29, in main
solve(F == 0, u_next, J=derivative(F, u_next), annotate=annotate)
File "/home/user/anaconda3/envs/fenics2019jaxadjoint/lib/python3.8/site-packages/fenics_adjoint/solving.py", line 47, in solve
block = solve_block_type(*args, ad_block_tag=ad_block_tag, **sb_kwargs)
TypeError: init() missing 1 required positional argument: 'b'

See attached for the complete output and list of packages installed:

error.txt
condaenv.txt