Kafka add-on: Unable to initialize modular input

[twinspop]

The Kafka TA hasn't been updated since before 8 was released. Is it still supported? Running with 8.0.x and 8.1.x I get this error in the search GUI:

    Unable to initialize modular input "kafka_mod" defined in the app "Splunk_TA_kafka": Introspecting scheme=kafka_mod: script running failed (exited with code 1)..

splunkd.log shows

04-06-2021 09:14:08.054 -0400 ERROR ModularInputs - <stderr> Introspecting scheme=kafka_mod: File "/app/splunk/etc/apps/Splunk_TA_kafka/bin/kafka_mod.py", line 67
04-06-2021 09:14:08.054 -0400 ERROR ModularInputs - <stderr> Introspecting scheme=kafka_mod: """.format(c.ta_short_name, desc, kcdl.use_single_instance())
04-06-2021 09:14:08.054 -0400 ERROR ModularInputs - <stderr> Introspecting scheme=kafka_mod: ^
04-06-2021 09:14:08.054 -0400 ERROR ModularInputs - <stderr> Introspecting scheme=kafka_mod: SyntaxError: invalid syntax
04-06-2021 09:14:08.138 -0400 ERROR ModularInputs - Introspecting scheme=kafka_mod: script running failed (exited with code 1).
04-06-2021 09:14:08.138 -0400 ERROR ModularInputs - Unable to initialize modular input "kafka_mod" defined in the app "Splunk_TA_kafka": Introspecting scheme=kafka_mod: script running failed (exited with code 1)..

EDIT: This is a simple case of not wrapping print function in parens, as Python 3 requires. But that tells me this is not Python 3 aware. Seems this TA has been abandoned.