The 'prepareFastGapFill' function runs incorrectly

[xxh122]

(1) When I follow the tutorial to run
“tic; [consistModel,consistMatricesSUX,BlockedRxns] = prepareFastGapFill(model);
tpre=toc;"
to fill my model's gaps;
An error occurred:
"L=27627
L=5641
L=914
L=494
L=365
L=305
L=259
L=216
L=176
L=143
L=143
L=143
L=136
L=136
Matrix index exceeds deletion range
error prepareFastGapFill (line 154th)
MatricesSUX.MatrixPart(NullRxns==1)=[];"

(2) and than, I try to use a common model(iJO1366) to check if there is a problem with the function or the provided model.In fact, there is no problem with the function, but then I encountered a new problem when I follow the tutorial to run"tgap=toc;
Stats{cnt,i+1} = num2str(length(AddedRxns.rxns));cnt = cnt+1;" An new error occurred:
"The index at position 2 is invalid. The array index must be a positive integer or logical value."

Overall, I would like to know what potential issues my model may have and how I can address the issue of 'invalid index at position 2. Array index must be a positive integer or logical value'. Looking forward to your answer very much