*Also filed this issue on git here: *
https://github.com/sagemath/sage/issues/38779#issue-2568964546

*Steps To Reproduce*

   1. My machine is Mac M2 with the OS Ventura 13.4 
   2. I already have anaconda installed: conda --version prints conda 
   23.10.0 
   3. I used the command conda create -n sage sage python=3.9 to 
   install sage in python as explained in installation guide 
   
<https://doc.sagemath.org/html/en/installation/conda.html#sec-installation-conda>
 
   4. Then setting the environment using conda activate sage sets the 
   appropriate environment. 
   5. The following program returns an error: 

from sage.all import *

var('a,b,c,d,x,y,z')

qf = qepcad_formula

ellipse = Integer(3)*x**Integer(2) + Integer(2)*x*y + y**Integer(2) - x + y 
- Integer(7)

F = qf.exists(y, ellipse == Integer(0)); F

qepcad(F)    


*Expected Behavior:*

*There should be no error and a formula should be returned.*

*Actual Behavior:*

*The error reported is*

Traceback (most recent call last):

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/sage/interfaces/expect.py",
 
line 521, in _start

    self._expect.expect(self._prompt)

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/pexpect/spawnbase.py", 
line 354, in expect

    return self.expect_list(compiled_pattern_list,

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/pexpect/spawnbase.py", 
line 383, in expect_list

    return exp.expect_loop(timeout)

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/pexpect/expect.py", 
line 179, in expect_loop

    return self.eof(e)

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/pexpect/expect.py", 
line 122, in eof

    raise exc

pexpect.exceptions.EOF: End Of File (EOF). Empty string style platform.

Qepcad with PID 92720 running /path/bin/env qe=/path/anaconda3/envs/sage 
qepcad

command: /path/bin/env

args: ['/path/bin/env', 'qe=/path/anaconda3/envs/sage', 'qepcad']

buffer (last 100 chars): b''

before (last 100 chars): b'env: qepcad: No such file or directory\r\n'

after: <class 'pexpect.exceptions.EOF'>

match: None

match_index: None

exitstatus: None

flag_eof: True

pid: 92720

child_fd: 6

closed: False

timeout: None

delimiter: <class 'pexpect.exceptions.EOF'>

logfile: None

logfile_read: None

logfile_send: None

maxread: 4194304

ignorecase: False

searchwindowsize: None

delaybeforesend: None

delayafterclose: 0.1

delayafterterminate: 0.1

searcher: searcher_re:

    0: re.compile(b'\nEnter an .*:\r')


During handling of the above exception, another exception occurred:


Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

  File "sage/misc/lazy_import.pyx", line 404, in 
sage.misc.lazy_import.LazyImport.__call__ 
(build/cythonized/sage/misc/lazy_import.c:4514)

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/sage/interfaces/qepcad.py",
 
line 1631, in qepcad

    qe = Qepcad(formula, vars=vars, **kwargs)

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/sage/interfaces/qepcad.py",
 
line 876, in __init__

    qex._send('[ input from Sage ]')

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/sage/interfaces/expect.py",
 
line 267, in _send

    self._start()

  File 
"/path/anaconda3/envs/sage/lib/python3.9/site-packages/sage/interfaces/expect.py",
 
line 525, in _start

    raise RuntimeError("unable to start %s: %s" % (self.name(), msg))

RuntimeError: unable to start QEPCAD: End Of File (EOF). Empty string style 
platform.

Qepcad with PID 92720 running /usr/bin/env 
qe=/Users/ani/anaconda3/envs/sage qepcad

command: /path/bin/env

args: ['/path/bin/env', 'qe=/path/anaconda3/envs/sage', 'qepcad']

buffer (last 100 chars): b''

before (last 100 chars): b'env: qepcad: No such file or directory\r\n'

after: <class 'pexpect.exceptions.EOF'>

match: None

match_index: None

exitstatus: None

flag_eof: True

pid: 92720

child_fd: 6

closed: False

timeout: None

delimiter: <class 'pexpect.exceptions.EOF'>

logfile: None

logfile_read: None

logfile_send: None

maxread: 4194304

ignorecase: False

searchwindowsize: None

delaybeforesend: None

delayafterclose: 0.1

delayafterterminate: 0.1

searcher: searcher_re:

    0: re.compile(b'\nEnter an .*:\r')


*Additional Information*

*No response*

*Environment*

   - *OS*: Mac M2 with the OS Ventura 13.4 
   - *Sage Version*: Installed from conda-forge 

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