UPDATE 2021-02-05: The problem went away and I was able to install and use TurboTax Deluxe 2020 for Mac after I updated to macOS 11.2, and downloaded the current file from Intuit (m_turbotax_1040d_ar_[phone number removed].dmg).
ORIGINAL: I downloaded Turbo Tax from Intuit, installed it, and ran it by right clicking on it, Open, then authorized it to run. It crashed with no windows appearing. Opened the Console> Log Reports> com.intuit.turbotax.2020.2021-01-08_04-37-25-7950000.log. Deleting and re-installing produce the same result.
Problem: Crashes immediately on startup.
Product: TURBOTAX DELUXE TAX YEAR 2020 MAC W/STATE DOWNLOAD RETAIL
Install file: m_turbotax_1040d_ar_[phone number removed].dmg
System:
System Version: macOS 11.1 (20C69)
Model Identifier: Macmini8,1
Memory: 32 GB
System Firmware Version: 1554.60.15.0.0 (iBridge: 18.16.13030.0.0,0)
com.intuit.turbotax.2020.2021-01-08_04-37-25-7950000.log:
Blech! Can't set logger: com.intuit.cg.fs.common.logging.Log4jLogger
2021-01-07 23:37:26.591 TurboTax 2020[91756:6373338] tpsLocalPrinter.postMonoInitCall.Start
2021-01-07 23:37:26.592 TurboTax 2020[91756:6373338] tpsLocalPrinter.postMonoInitCall.End
2021-01-07 23:37:27.363 TurboTax 2020[91756:6373338] will create connection
2021-01-07 23:37:27.787 TurboTax 2020[91756:6373603] <NSHTTPURLResponse: 0x600000f9d800> { URL: redacted } { Status Code: 200, Headers { ... }
2021-01-07 23:37:27.787 TurboTax 2020[91756:6373602] -[NSNull length]: unrecognized selector sent to instance 0x7fff80094390
2021-01-07 23:37:27.800 TurboTax 2020[91756:6373602] Terminate called after uncaught c++ exception:
0 TurboTax 2020 [phone number removed]6f101b PrintStackAndTerminateOnUncaughtCPPException + 59
1 libc++abi.dylib 0x00007fff20339847 _ZSt11__terminatePFvvE + 8
2 libc++abi.dylib 0x00007fff203397e9 _ZSt9terminatev + 41
3 libdispatch.dylib 0x00007fff201ca7db _dispatch_client_callout + 28
4 libdispatch.dylib 0x00007fff201cce1c _dispatch_queue_override_invoke + 777
5 libdispatch.dylib 0x00007fff201d9857 _dispatch_root_queue_drain + 326
6 libdispatch.dylib 0x00007fff201d9fb8 _dispatch_worker_thread2 + 92
7 libsystem_pthread.dylib 0x00007fff20372453 _pthread_wqthread + 244
8 libsystem_pthread.dylib 0x00007fff20371467 start_wqthread + 15
