optima 540 error in button panels

what´s up friends
(thanks in advance for your comments)
Today I have an issue on GE ct optima 540

the four button panels (rear and front) shows "Err"
and error log said:



Host: Table Gantry Processor Ermes#: 260111002
Exception Class: Secondary Severity: Pri/Soft
File: guif_can_mgr2.c Line#: 986
Function: OPERATOR INPUT/OUTPUT: Gantry UIF Communication
Scan Type: None/Unknown Scan: 0/0/0
GUIF CAN bus error warning.
96 CAN bus errors have occured.
1628 bus warnings since last reset.
0 receive overruns since last reset.




Host: Table Gantry Processor Ermes#: 260111003
Exception Class: Secondary Severity: Sec/Soft
File: guif_can_mgr2.c
Line#: 1002
Function: OPERATOR INPUT/OUTPUT: Gantry UIF Communications
Scan Type: None/Unknown Scan: 0/0/0
GUIF CAN bus error status returned.
Error status 0x1.



Thu May 28 11:19:19 2026

Host: tgp
Proc: tgp_subsys
Error: 260111002
File: guif_can_mgr2.c
Line: 986
Thu May 28 11:19:20 2026
Host: Table Gantry Processor Ermes#: 260111002
Exception Class: Secondary Severity: Pri/Soft File: guif_can_mgr2.c Line#: 986
Function: OPERATOR INPUT/OUTPUT: Gantry UIF Communications
Scan Type: None/Unknown Scan: 0/0/0
GUIF CAN bus error warning.
96 CAN bus errors have occured.
1629 bus warnings since last reset.
O receive overruns since last reset.

Host: Table Gantry Processor Ermes#: 260111003
Exception Class: Secondary Severity: Sec/Soft
File: guif_can_mgr2.c Line#: 1002
Function: OPERATOR INPUT/OUTPUT: Gantry UIF Communications
Scan Type: None/Unknown Scan: 0/0/0
GUIF CAN bus error status returned.
Error status 0x1.