Your solution didn’t work, unfortunately.
After i changed the number to 10.13.4 following error-message appears after wanting to start the program:

Here’s the code after i clicked on report:
Process: anki [87414]
Path: /Applications/Anki.app/Contents/MacOS/anki
Identifier: net.ankiweb.dtop
Version: ???
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: anki [87414]
User ID: 501
Date/Time: 2022-12-24 07:59:26.311 +0100
OS Version: Mac OS X 10.13.6 (17G14042)
Report Version: 12
Anonymous UUID: 36029B77-ACF1-38B6-DCF9-613B9D491F17
Sleep/Wake UUID: B0D2A846-B311-4A1A-9C5B-3E307CE6301C
Time Awake Since Boot: 3600000 seconds
Time Since Wake: 720 seconds
System Integrity Protection: enabled
Crashed Thread: 0
Exception Type: EXC_CRASH (Code Signature Invalid)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Termination Reason: Namespace CODESIGNING, Code 0x1
kernel messages:
VM Regions Near 0 (cr2):
→
__TEXT 0000000108d85000-000000010bcad000 [ 47.2M] r-x/r-x SM=COW
Thread 0 Crashed:
0 ??? 0x00000001117e019c _dyld_start + 0
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000000 rcx: 0x0000000000000000 rdx: 0x0000000000000000
rdi: 0x0000000000000000 rsi: 0x0000000000000000 rbp: 0x0000000000000000 rsp: 0x00007ffee6e7abf8
r8: 0x0000000000000000 r9: 0x0000000000000000 r10: 0x0000000000000000 r11: 0x0000000000000000
r12: 0x0000000000000000 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x0000000000000000
rip: 0x00000001117e019c rfl: 0x0000000000000200 cr2: 0x0000000000000000
Logical CPU: 0
Error Code: 0x00000000
Trap Number: 0
Binary Images:
0x108d85000 - 0x10bcac111 +??? (0) (null)
0x1117df000 - 0x111829adf +??? (551.5) (null)
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 2288754
thread_create: 0
thread_set_state: 0
VM Region Summary:
ReadOnly portion of Libraries: Total=52.9M resident=0K(0%) swapped_out_or_unallocated=52.9M(100%)
Writable regions: Total=8868K written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=8868K(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
STACK GUARD 56.0M 2
Stack 8192K 2
__DATA 2016K 5
__LINKEDIT 5580K 4
__TEXT 47.4M 3
shared memory 8K 3
=========== ======= =======
TOTAL 118.9M 13
Model: iMac11,3, BootROM 99.0.0.0.0, 4 processors, Intel Core i5, 2,8 GHz, 12 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5750, ATI Radeon HD 5750, PCIe
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80CE, 0x4D34373142353637334648302D4348392020
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333531533642465238432D48392020
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54333531533642465238432D48392020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
Bluetooth: Version 6.0.7f22, 3 services, 27 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: WDC WDS500G2B0A-00SM50, 500,11 GB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: Internal Memory Card Reader
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: USB 2.0 Bus
USB Device: Hub
USB Device: IR Receiver
USB Device: Built-in iSight
Thunderbolt Bus: