To use Clickhouse backed dashboard your CPU need to support SSE 4.2 and to use latest version of MongoDB you need to have support for AVX1.
Your host CPU may have complete support for both these technologies but it may be explicitly disabled by Proxmox configuration.
For example it may look this way from your Linux VM on Proxmox:
cat /proc/cpuinfo | grep flags | head -1
Example output:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx lm constant_tsc nopl xtopology cpuid tsc_known_freq pni cx16 x2apic hypervisor lahf_lm cpuid_fault pti
Options SSE42 and AVX are clearly missing from this list. To address this issue you will need to open CPU configuration and switch CPU type to “host”:
After that you will need to restart VM to apply changes.
After changes cpu flags will look this way:
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon rep_good nopl xtopology cpuid tsc_known_freq pni pclmulqdq vmx ssse3 cx16 pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm cpuid_fault pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid tsc_adjust xsaveopt arat umip md_clear arch_capabilities
In this particular case we still have no AVX support but SSE42 is here and we can run Clickhouse without any issues.