Cause
This error occurs if your entry contains an opening hexadecimal binary delimiter (left square bracket ([)) with no closing delimiter (right square bracket (])).
Hexadecimal binary literals in JADE are represented as a sequence of space-separated hexadecimal characters, enclosed in square brackets; for example:
DaysInMonth = #[1F 1C 1F 1E 1F 1E 1F 1F 1E 1F 1E 1F];
You may have omitted the closing delimiter, or you may have placed it in a comment.
Action
Determine the correct placement of the closing delimiter and then change the input accordingly.