Crash on day 24, Jun route, after choice scene 'Kyoko and Vic' just when Jun animation kicks at him entering class.
It will crash to desktop if rolling back, after renpy exception. But launching again the game and loading automated save will work properly and do not crash on same line.
Copy tracebak next:

I'm sorry, but an uncaught exception occurred.

While running game code:

Exception: Parameter 'new_widget' is not known by ATL Transform.

-- Full Traceback ------------------------------------------------------------

Full traceback:

  File "Day24_Jun.rpyc", line 392, in script

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/ast.py", line 1438, in execute

    renpy.exports.with_statement(trans, paired)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/exports.py", line 1682, in with_statement

    return renpy.game.interface.do_with(trans, paired, clear=clear)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 2718, in do_with

    clear=clear)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 3276, in interact

    repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, **kwargs)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 3633, in interact_core

    new_widget=layers_root)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/atl.py", line 462, in __call__

    raise Exception('Parameter %r is not known by ATL Transform.' % k)

Exception: Parameter 'new_widget' is not known by ATL Transform.

Linux-5.15.0-70-generic-x86_64-with-debian-bookworm-sid

Ren'Py 7.4.8.1895

Tennis Ace 0.62p

I append here another exception, since it's due to the same problem.
This time I can ignore the exception, and don't crash to desktop on rollback.
Day 28, Jun route. On Atsushi animation kicks in when Yui appears.

I'm sorry, but an uncaught exception occurred.

While running game code:

Exception: Parameter 'new_widget' is not known by ATL Transform.

-- Full Traceback ------------------------------------------------------------

Full traceback:

  File "Day28_Jun.rpyc", line 170, in script

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/ast.py", line 1438, in execute

    renpy.exports.with_statement(trans, paired)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/exports.py", line 1682, in with_statement

    return renpy.game.interface.do_with(trans, paired, clear=clear)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 2718, in do_with

    clear=clear)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 3276, in interact

    repeat, rv = self.interact_core(preloads=preloads, trans_pause=trans_pause, pause=pause, pause_start=pause_start, **kwargs)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/display/core.py", line 3633, in interact_core

    new_widget=layers_root)

  File "/home/redacted/Games/VNs/TennisAce0.62P-pc/renpy/atl.py", line 462, in __call__

    raise Exception('Parameter %r is not known by ATL Transform.' % k)

Exception: Parameter 'new_widget' is not known by ATL Transform.

Linux-5.15.0-70-generic-x86_64-with-debian-bookworm-sid

Ren'Py 7.4.8.1895

Tennis Ace 0.62p

That's weird, the same problem happened to me but on Android, is there a possibility that it could affect the game in some way?

I can't say since I don't have the game's source code. It appears the problem is with the animation, if that's the case no game logic should be affected. Just a missing animation, and an inconvenient exception.