There is no bar in adjusting status from TPS to GC, if you have maintained your status prior to receipt of TPS status.

Also, read the memorandum issued by USCIS.

https://www.uscis.gov/sites/default/files/USCIS/Laws/Memoranda/2019/Matter_of_H-G-G-_Adopted_Decision_2019-01_AAO_July_31_2019.pdf

In addition to showing that he or she has been admitted or paroled into the United States, an applicant who seeks to adjust
status as an employment-based immigrant under section 203(b) of the Act, 8 U.S.C. § 1153(b), also must establish that he
or she is “in a lawful nonimmigrant status.” Section 245(c)(7) of the Act, 8 U.S.C. § 1255(c)(7). Likewise, to change
nonimmigrant status while in the United States, an alien must demonstrate that he or she is “continuing to maintain” lawful
nonimmigrant status. Section 248(a) of the Act, 8 U.S.C. § 1258(a). For example, if an F-1 nonimmigrant student was
granted TPS while still in her duration of stay in F-1 status, and her duration of stay subsequently expired, the student
would not be disqualified for adjustment or change of status because of the expired F-1 status due to the protection provided
by section 244(f)(4) of the Act.