Invalid type cast from 'null' - cobol

Question

I am still new to COBOL and have been working on a project for school for almost a week now. I am running OpenCobol 1.1.
When I try to compile it I get this error.
typeck.c:5912: Invalid type cast from 'null'
Tag 1 0 Tag 2 10
Aborting compile of lab4.cob at line 214
I've been frustrated because I've tried changing the code around a lot with no luck.
Procedure Division.
000-Main.
Perform 100-initialize
Perform Until EndOfFile = "Y"
Read Lab4-in-File
At End
Move "Y" To EndOfFile
Not At End
Perform 300-process
End-Read
End-Perform
Perform 900-finalize
Stop Run.
100-intialize.
Perform 110-open-files
Perform 120-get-data.
110-open-files.
Open Input Lab4-in-File
Output Ot-File.
120-get-date.
Accept WS-date from date yyyymmdd
Move WS-Year To PH-Year
Move WS-Month To PH-Month
Move WS-Day To PH-Day.
300-process.
Move Dept-no To dl-dep-no
Move Employee-no To dl-emp-no
If First-name Not = "Null"
String First-name Delimited By Size
" " Delimited By Size
Last-name Delimited By Size
Into dl-emp
else
Move Last-name To dl-emp
End-If
Move Job-title To dl-job
Move DOH To dl-doh
Move Mar-status To dl-marital
Move Dependents To dl-dependents
Move MCoverage To dl-insurance
Move DCoverage To dl-insurance
Move VCoverage To dl-insurance
Move 401K To dl-401k
Move Pay-code To dl-pay-code
If Pay-code = "C" Or "S"
Compute Pay-hold rounded =
Pay / 12
Move Pay-hold To dl-monthly-pay
else
Compute Pay-hold rounded =
Pay * HPW * 4
Move Pay-hold To dl-monthly-pay
End-If
If Pay-code = "C"
Compute Com-hold rounded =
Act-sale * C-rate
Move Com-hold To dl-commission
Else
Move 0 To dl-commission
End-If
Perform 800-print
Multiply C-rate By Act-sale Giving
total-sales
Add Pay To total-sales.
800-print.
If LineNum > LinesPerPage
Perform 825-new-page
End-If
Write Lab4-Record2 From Detail-Line
**After advancing 1 line** *> This is line 214
Add 1 To LineNum.
825-new-page.
If PageNum > 0
Write Lab4-Record2 From Blank-line
After advancing 1 line
End-If
Add 1 To PageNum
Move PageNum To PH-PageNo
Write Lab4-Record2 From Page-Header
After advancing page
Write Lab4-Record2 From Blank-line
After advancing 1 line
Write Lab4-Record2 From Column-Header
After advancing 1 line
Write Lab4-Record2 From Blank-line
After advancing 1 line
Move 5 To LineNum.
900-finalize.
Perform 950-print-monthly-total
Perform 999-close-files.
950-print-monthly-total.
If LineNum + 1 > LinesPerPage
Perform 825-new-page
End-If
Write Lab4-Record2 From Blank-line
After advancing 1 line
Move total-sales To Total-pay
Write Lab4-Record2 From Total-Line
After advancing 1 line
Add 2 To LineNum.
999-close-files.
Close Lab4-in-File Ot-File.
I would really appreciate it if someone could help me find what is causing the error. Thanks in advance!
Working-Storage Section.
01 EndOfFile Pic X Value "N".
01 Report-fields.
05 PageNum Pic 9(3) value 0.
05 LinesPerPage Pic 9(2) value 40.
05 LineNum Pic 9(2) value 41.
01 WS-date.
05 WS-Year Pic 9(4).
05 WS-Month Pic 99.
05 WS-Day Pic 99.
01 total-fields.
05 total-sales Pic 9(11)v99 Value 0.
01 Page-Header.
05 PH-Month Pic Z9/.
05 PH-Day Pic 99/.
05 PH-Year Pic 9999.
05 Pic X(7) Value Spaces.
05 Pic X(29) Value "Stomper &" &
" Wombat's Emporium"
05 Pic X(6) Value "Page:".
05 PH-PageNo Pic ZZ9.
01 Column-Header.
05 Pic X(8) Value "Dep #".
05 Pic X(15) Value "Emp #".
05 Pic X(27) Value "Employee".
05 Pic X(18) Value "Title".
05 Pic X(9) Value "DOH".
05 Pic X(9) Value "Marital".
05 Pic X(7) Value "#Deps".
05 Pic X(6) Value "Ins".
05 Pic X(6) Value "401K".
05 Pic X(6) Value "Pay".
05 Pic X(27) Value "Expected " &
"Pay + Commission".
01 Pay-hold Pic 9(9)V9(2) Value 0.
01 Com-hold Pic 9(9)V9(2) Value 0.
01 Detail-Line.
05 dl-dep-no Pic X(5).
05 Pic X(1) Value spaces.
05 dl-emp-no Pic X(5).
05 Pic X(1) Value spaces.
05 dl-emp Pic X(35).
05 Pic X(1) Value spaces.
05 dl-job Pic X(20).
05 Pic X(1) Value spaces.
05 dl-doh Pic X(8).
05 Pic X(1) Value spaces.
05 dl-marital Pic X.
05 Pic X(1) Value spaces.
05 dl-dependents Pic 9(2).
05 Pic X(1) Value spaces.
05 dl-insurance Pic X(3).
05 Pic X(1) Value spaces.
05 dl-401k Pic Z.9ZZ.
05 Pic X(1) Value spaces.
05 dl-pay-code Pic X.
05 Pic X(1) Value spaces.
05 dl-monthly-pay Pic $$$$,$$$,$$9.99.
05 Pic X(1) Value spaces.
05 dl-commission Pic $$$,$$9.99.
01 Total-Line.
05 Pic X(61) Value Spaces.
05 Pic X(24) Value "Total" &
" Expected Payroll: ".
05 Total-pay Pic $$$$,$$$,$$$,$$9.99.
01 Blank-line Pic X Value spaces.

Answer 1

The compiler has a broken parser. It is broken because of a coding error (still a compiler bug). In cases like this you only have the chance to either spot the error or - much better - use a newer version.
I've just put your code in an online compiler using the last release of the compiler: GnuCOBOL 2.2. I highly suggest to upgrade to at least this version.
See your code here - I've just added a minimal header and end.
Then click on "Execute" and you compile it online, leading to the following error messages:
main.cobc: 27: error: duplicate PICTURE clause
main.cobc: 27: error: duplicate VALUE clause
main.cobc: 64: error: a Z or * which is after the decimal point cannot follow 9
If you check the line 27 in this program you see
05 Pic X(29) Value "Stomper &" &
" Wombat's Emporium" *> <<- missing period
05 Pic X(6) Value "Page:".
Fixed code is also available.