Full error:
java.lang.VerifyError: Bad type on operand stack
Exception Details:
  Location:
    scripts/Utilities/f.e()Z @831: invokevirtual
  Reason:
    Type 'java/lang/Object' (current frame, stack[0]) is not assignable to 'org/tribot/api2007/types/RSInterface'
  Current Frame:
    bci: @831
    flags: { }
    locals: { 'java/lang/Object' }
    stack: { 'java/lang/Object' }
  Bytecode:
    0x0000000: 014b 0704 5958 b801 0b99 0022 0704 5958
    0x0000010: bb00 1e59 b702 5cb8 0261 594c be9e 031d
    0x0000020: 2b03 0459 5832 4ba7 0313 bf11 0159 0459
    0x0000030: 58b8 010b 9900 3d11 0159 0459 5804 5959
    0x0000040: 58b8 0264 594b c600 0a2a b602 6ac7 0011
    0x0000050: 1101 5904 5958 0504 5958 b802 644b 2ac6
    0x0000060: 02db 2a10 0b04 5958 b602 6e59 4ba7 02ce
    0x0000070: bf10 3c04 5958 b801 0b99 000b b802 7057
    0x0000080: 2aa7 02ba 1100 c104 5958 b801 0b99 0015
    0x0000090: 1100 c104 5958 0504 5958 b802 6459 4ba7
    0x00000a0: 029c 1100 e504 5958 b801 0b99 0015 1100
    0x00000b0: e504 5958 0459 5958 b802 6459 4ba7 027e
    0x00000c0: 1054 0459 58b8 010b 9900 1410 5404 5958
    0x00000d0: 0704 5958 b802 6459 4ba7 0262 1101 d004
    0x00000e0: 5958 b801 0b99 0023 1101 d004 5958 0459
    0x00000f0: 5958 b802 6459 4bc6 0243 2a10 0b04 5958
    0x0000100: b602 6e59 4ba7 0236 1066 0459 58b8 010b
    0x0000110: 9900 1510 6604 5958 1007 0459 58b8 0264
    0x0000120: 594b a702 1911 00d6 0459 58b8 010b 9900
    0x0000130: 1611 00d6 0459 5810 1904 5958 b802 6459
    0x0000140: 4ba7 01fa 1101 9004 5958 b801 0b99 0022
    0x0000150: 1101 9004 5958 0504 5958 b802 6459 4bc6
    0x0000160: 01db 2a06 0459 58b6 026e 594b a701 cf11
    0x0000170: 0192 0459 58b8 010b 9900 2311 0192 0459
    0x0000180: 5805 0459 58b8 0264 594b c601 b02a 100b
    0x0000190: 0459 58b6 026e 594b a701 a311 017e 0459
    0x00001a0: 58b8 010b 9900 1611 017e 0459 5810 1204
    0x00001b0: 5958 b802 6459 4ba7 0184 1101 3604 5958
    0x00001c0: b801 0b99 003c 1101 3604 5958 0459 5958
    0x00001d0: b802 6459 4bc6 000a 2ab6 026a c700 1111
    0x00001e0: 0136 0459 5805 0459 58b8 0264 4b2a c601
    0x00001f0: 4c2a 100b 0459 58b6 026e 594b a701 3f11
    0x0000200: 0229 0459 58b8 010b 9900 2311 0229 0459
    0x0000210: 5804 5959 58b8 0264 594b c601 202a 100b
    0x0000220: 0459 58b6 026e 594b a701 1311 01c3 0459
    0x0000230: 58b8 010b 9900 2311 01c3 0459 5804 5959
    0x0000240: 58b8 0264 594b c600 f42a 100b 0459 58b6
    0x0000250: 026e 594b a700 e711 0253 0459 58b8 010b
    0x0000260: 9900 3511 0253 0459 58bb 001c 59b7 0271
    0x0000270: b802 6159 4cbe 9e00 0c2b 0304 5958 32a7
    0x0000280: 0011 1102 5304 5958 1023 0459 58b8 0276
    0x0000290: 4b2a a700 a911 01d0 0459 58b8 010b 9900
    0x00002a0: 2811 01d0 0459 58bb 001a 59b7 0277 b802
    0x00002b0: 6159 4cbe 9e00 0c2b 0304 5958 32a7 0004
    0x00002c0: 014b 2aa7 0078 1101 1504 5958 b801 0b99
    0x00002d0: 003e 1101 1504 5958 bb00 1859 b702 78b8
    0x00002e0: 0261 594c be9a 0015 1101 1504 5958 100f
    0x00002f0: 0459 58b8 0276 4ba7 0043 2bbe 9e00 0c2b
    0x0000300: 0304 5958 32a7 0004 014b a700 3011 011c
    0x0000310: 0459 58b8 010b 9900 2411 011c 0459 58bb
    0x0000320: 0016 59b7 0279 b802 6159 4cbe 9e00 0c2b
    0x0000330: 0304 5958 32a7 0004 014b 2ac6 001d 2ab6
    0x0000340: 027c 9a00 1604 2ab6 027f b802 8304 5958
    0x0000350: b802 8604 5959 58ac 0304 5958 ac
  Stackmap Table:
    same_locals_1_stack_item_frame(@42,Object[#147])
    append_frame(@43,Null)
    full_frame(@80,{Object[#614]},{})
    same_frame(@94)
    full_frame(@112,{},{Object[#147]})
    append_frame(@113,Null)
    same_frame(@132)
    same_frame(@162)
    same_frame(@192)
    same_frame(@220)
    same_frame(@264)
    same_frame(@293)
    same_frame(@324)
    same_frame(@367)
    same_frame(@411)
    same_frame(@442)
    full_frame(@479,{Object[#614]},{})
    same_frame(@493)
    full_frame(@511,{Null},{})
    same_frame(@555)
    same_frame(@599)
    append_frame(@642,Object[#627])
    same_locals_1_stack_item_frame(@656,Object[#4])
    chop_frame(@661,1)
    append_frame(@704,Object[#627])
    same_locals_1_stack_item_frame(@705,Object[#614])
    chop_frame(@710,1)
    append_frame(@762,Object[#627])
    same_frame(@776)
    same_locals_1_stack_item_frame(@777,Object[#614])
    chop_frame(@781,1)
    append_frame(@824,Object[#627])
    same_locals_1_stack_item_frame(@825,Object[#614])
    full_frame(@826,{Object[#4]},{})
    same_locals_1_stack_item_frame(@827,Object[#4])
    same_frame(@856)

scripts.Utilities.yb.d(EzBanking.java:390)
scripts.Utilities.yb.d(EzBanking.java:284)
scripts.ezcluesolver.EzClueSolver.handleState(EzClueSolver.java:1074)
scripts.ezcluesolver.EzClueSolver.handleState(EzClueSolver.java:56)
org.tribot.script.EnumScript.run(ph:64)
java.lang.Thread.run(Thread.java:745)
[16:53:19] Script Ended: EzClueSolver.

EzBanking line 390:
return Utilities.areUnwantedInterfacesOpen() && Utilities.closeUnwantedInterfaces();

Utilities.areUnwantedInterfacesOpen just checks Interfaces.isInterfaceSubstantiated calls which throw the error.
Utilities.closeUnwantedInterfaces is not reached.