Exception on command "list input" or "list output"

[rcasteran]

Impacted version jarvis4se version: 1.2

Describe the bug Jarvis is unable to display the result of the command "list input" for a function and raises an AttributeError exception. Same behavior for "list output"

To Reproduce Execute the followings commands:

%%jarvis
with test
F is a function
a is a data
F consumes a

list input F

Or

%%jarvis
with test
F is a function
a is a data
F produces a

list output F

Expected behavior Jarvis must display a as an input (first case) or an output (second case)

Screenshots Add screenshots to help explain your problem.

Desktop (please complete the following information):

• Browser: Chrome
• Browser version: 100.0.4896.75
• Java: JRE
• Java version: 1.8.0_291

[rcasteran]

Exception raises on Python 3.7.6 with Pandas 1.0.1. No exception with Python 3.9.6 and Pandas 1.4.1