Safemoon fork cant add lp

I created a safemoon fork and deployed it using testnet router address. i am stucked at creating LP, i am getting error ALERT: Transaction Error. Exception thrown in contract code.

steps i have taken to fix the issue but still failing ;

  1. setLiquidityFeePercent to 0
  2. setMaxTxPercent to 100
  3. setSwapAndLiquifyEnabled false
  4. setTaxFeePercent 0
  5. pancake liquidity, i added bnb and mycoin and approved both on pancake.

i am still getting same error.
my coin testnet : 0x3D7D64d9e9916238E2AE567475988B5D916A2C55
error

I have the same question