Quartus Prime Pro 19.2 quits unexpected with following error report. Does anybody know, what's the problem in this case?

Problem Details

Error:

Internal Error: Sub-system: CDB_SGATE, File: /quartus/db/cdb_sgate/cdb_sgate_component.cpp, Line: 926

Port direction does not agree.

Stack Trace:

0x5f4ac: CDB_SGATE_COMPONENT::retrieve_known_port + 0x3ba6c (db_cdb_sgate)

0x4b568: qis_get_component_ports + 0x118 (synth_qis)

0x4874a: QIS_RTL_STAGE::IMPL::merge_nodes + 0x64a (synth_qis)

0x49219: QIS_RTL_STAGE::IMPL::merge_sgate_models + 0x339 (synth_qis)

0x43a02: QIS_RTL_STAGE::IMPL::dissolve_partition + 0x412 (synth_qis)

0x53641: QIS_RTL_STAGE::IMPL::uniquify + 0x9b1 (synth_qis)

0x54778: QIS_RTL_STAGE::IMPL::uniquify + 0xc08 (synth_qis)

0x1bb98: qis_uniquify + 0x1f8 (synth_qis)

0x16442: TclNRRunCallbacks + 0x62 (tcl86)

0x17c4d: TclEvalEx + 0x9ed (tcl86)

0xa6a8b: Tcl_FSEvalFileEx + 0x22b (tcl86)

0xa5136: Tcl_EvalFile + 0x36 (tcl86)

0x14ebc: qexe_evaluate_tcl_script + 0x3fc (comp_qexe)

0x13f72: qexe_do_tcl + 0x4b2 (comp_qexe)

0x1a34e: qexe_run_tcl_option + 0x5ee (comp_qexe)

0x18195: QCU::DETAIL::intialise_qhd_and_run_qexe + 0x95 (comp_qcu)

0x290bc: qcu_run_tcl_option + 0x2ec (comp_qcu)

0x19c58: qexe_run + 0x438 (comp_qexe)

0x1ad8a: qexe_standard_main + 0x26a (comp_qexe)

0x34d9: qsyn2_main + 0x129 (quartus_syn)

0x14a08: msg_main_thread + 0x18 (CCL_MSG)

0x160ae: msg_thread_wrapper + 0x6e (CCL_MSG)

0x20fb0: mem_thread_wrapper + 0x70 (ccl_mem)

0x13f8d: msg_exe_main + 0x20d (CCL_MSG)

0x4dd4: __scrt_common_main_seh + 0x11c (quartus_syn)

0x17bd3: BaseThreadInitThunk + 0x13 (KERNEL32)

0x6cee0: RtlUserThreadStart + 0x20 (ntdll)

End-trace

Executable: quartus_syn

Comment:

None

System Information

Platform: windows64

OS name: Windows 10

OS version: 10.0

Quartus Prime Information

Address bits: 64

Version: 19.2.0

Build: 57

Edition: Pro Edition