Can not connect Mono debugger to Unity Editor

Hello, I am on Linux Mint 19.1 running Unity Editor 2018.3.14f1 (tried with 2019.f.8f1 too, similar happened but with Timed Out error)
I have MonoDevelop installed and I want to attach it to Editor. Within MonoDevelop menu, I go and try with Run/Attach to process... I choose Unity process and I get first error window (img attached).
I also see log message in MonoDevelop that I can not load some shared libraries (possibly not installed, idk what I need).

This worked earlier in time when I used older version of both Mint and Unity, anyone come across something similar?
Tnx

Here is log in MonoDevelop:

Code (csharp):

1. Attaching to process 5193
2. [New LWP 5194]
3. attach 5193
4. [New LWP 5196]
5. [New LWP 5198]
6. [New LWP 5199]
7. [New LWP 5201]
8. [New LWP 5221]
9. [New LWP 5222]
10. [New LWP 5223]
11. [New LWP 5224]
12. [New LWP 5225]
13. [New LWP 5226]
14. [New LWP 5227]
15. [New LWP 5228]
16. [New LWP 5229]
17. [New LWP 5230]
18. [New LWP 5231]
19. [New LWP 5232]
20. [New LWP 5233]
21. [New LWP 5234]
22. [New LWP 5235]
23. [New LWP 5236]
24. [New LWP 5237]
25. [New LWP 5238]
26. [New LWP 5239]
27. [New LWP 5240]
28. [New LWP 5241]
29. [New LWP 5242]
30. [New LWP 5244]
31. [New LWP 5245]
32. [New LWP 5246]
33. [New LWP 5255]
34. [New LWP 5256]
35. [New LWP 5257]
36. [New LWP 5258]
37. [New LWP 5259]
38. [New LWP 5260]
39. [New LWP 5261]
40. [New LWP 5262]
41. [New LWP 5263]
42. [New LWP 5265]
43. [New LWP 5266]
44. [New LWP 5267]
45. [New LWP 5274]
46. [New LWP 5283]
47. [New LWP 5285]
48. [New LWP 5286]
49. [New LWP 5287]
50. [New LWP 5264]
51. [New LWP 5288]
52. [New LWP 5275]
53. [New LWP 5289]
54. [New LWP 5290]
55. [New LWP 5291]
56. [New LWP 5292]
57. [New LWP 5293]
58. [New LWP 5294]
59. [New LWP 5295]
60. [New LWP 5296]
61. [New LWP 5297]
62. [New LWP 5298]
63. [New LWP 5299]
64. [New LWP 5300]
65. [New LWP 5301]
66. [New LWP 5303]
67. [New LWP 5304]
68. [New LWP 5305]
69. [New LWP 5307]
70. [New LWP 5308]
71.  
72. warning: Could not load shared library symbols for 3 libraries, e.g. /tmp/.mount_UnityHW4HP2E/usr/lib/libXtst.so.6.\nUse the \"info sharedlibrary\" command to see the complete listing.\nDo you need \"set solib-search-path\" or \"set sysroot\
73. [Thread debugging using libthread_db enabled]
74. Using host libthread_db library \"/lib/x86_64-linux-gnu/libthread_db.so.1\".
75. 0x00007f53193acbf9 in __GI___poll (fds=0x2c9115be5c80, nfds=7, timeout=4) at ../sysdeps/unix/sysv/linux/poll.c:29
76. 29\t../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
77.  
78.  

 

Since Unity 2018, mono support has been dropped, to support visual studio, which is default IDE now.

 

Thanks for the info. I installed VSCode and it works, all good.
https://code.visualstudio.com/docs/other/unity